Description of problem:
If insert the virtio-iommu device in a pcie-root-port, the guest will get stuck at "Reached target Basic System" and finally enter the dracut system.

Version-Release number of selected component (if applicable):
Host kernel: 5.14.0-90.el9.aarch64
Guest kernel: 5.14.0-86.el9.aarch64
qemu version: qemu-kvm-7.0.0-3.el9.aarch64
edk2 version: edk2-aarch64-20220221gitb24306f15d-1.el9.noarch

How reproducible:
Always

Steps to Reproduce:
1. Launch a guest with virtio-iommu which insert in the pcie-root-port
MALLOC_PERTURB_=1  /usr/libexec/qemu-kvm \
    -name 'avocado-vt-vm1'  \
    -sandbox on  \
    -blockdev node-name=file_aavmf_code,driver=file,filename=/usr/share/edk2/aarch64/QEMU_EFI-silent-pflash.raw,auto-read-only=on,discard=unmap \
    -blockdev node-name=drive_aavmf_code,driver=raw,read-only=on,file=file_aavmf_code \
    -blockdev node-name=file_aavmf_vars,driver=file,filename=/home/kvm_autotest_root/images/avocado-vt-vm1_rhel910-aarch64-virtio.qcow2_VARS.fd,auto-read-only=on,discard=unmap \
    -blockdev node-name=drive_aavmf_vars,driver=raw,read-only=off,file=file_aavmf_vars \
    -machine virt,gic-version=host,memory-backend=mem-machine_mem,pflash0=drive_aavmf_code,pflash1=drive_aavmf_vars \
    -device pcie-root-port,id=pcie-root-port-0,multifunction=on,bus=pcie.0,addr=0x1,chassis=1 \
    -device pcie-pci-bridge,id=pcie-pci-bridge-0,addr=0x0,bus=pcie-root-port-0  \
    -nodefaults \
    -device pcie-root-port,id=pcie-root-port-1,port=0x1,addr=0x1.0x1,bus=pcie.0,chassis=2 \
    -device virtio-iommu-pci,bus=pcie-root-port-1,addr=0x0 \
    -device pcie-root-port,id=pcie-root-port-2,port=0x2,addr=0x1.0x2,bus=pcie.0,chassis=3 \
    -device virtio-gpu-pci,bus=pcie-root-port-2,addr=0x0 \
    -m 8192 \
    -object memory-backend-ram,size=8192M,id=mem-machine_mem  \
    -smp 4,maxcpus=4,cores=2,threads=1,sockets=2  \
    -cpu 'host' \
    -serial unix:'/tmp/serial-serial0',server=on,wait=off \
    -device pcie-root-port,id=pcie-root-port-3,port=0x3,addr=0x1.0x3,bus=pcie.0,chassis=4 \
    -device qemu-xhci,id=usb1,bus=pcie-root-port-3,addr=0x0 \
    -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 \
    -blockdev node-name=file_image1,driver=file,auto-read-only=on,discard=unmap,aio=threads,filename=/home/kvm_autotest_root/images/rhel910-aarch64-virtio.qcow2,cache.direct=on,cache.no-flush=off \
    -blockdev node-name=drive_image1,driver=qcow2,read-only=off,cache.direct=on,cache.no-flush=off,file=file_image1 \
    -device pcie-root-port,id=pcie-root-port-4,port=0x4,addr=0x1.0x4,bus=pcie.0,chassis=5 \
    -device virtio-blk-pci,id=image1,drive=drive_image1,bootindex=0,write-cache=on,bus=pcie-root-port-4,addr=0x0 \
    -device pcie-root-port,id=pcie-root-port-5,port=0x5,addr=0x1.0x5,bus=pcie.0,chassis=6 \
    -device virtio-net-pci,mac=9a:8e:da:06:5e:22,rombar=0,id=id3Znk3z,netdev=idjOsJKR,bus=pcie-root-port-5,addr=0x0  \
    -netdev tap,id=idjOsJKR,vhost=on  \
    -vnc :0  \
    -rtc base=utc,clock=host,driftfix=slew \
    -enable-kvm \
    -monitor stdio

2. Check the status of the guest
# nc -U /tmp/serial-serial0

3.

Actual results:
......
......
[  OK  ] Reached target Local File Systems.
[  OK  ] Reached target System Initialization.
[  OK  ] Reached target Basic System.
[  157.476029] dracut-initqueue[465]: Warning: dracut-initqueue: timeout, still waiting for following initqueue hooks:
[  157.476798] dracut-initqueue[465]: Warning: /lib/dracut/hooks/initqueue/finished/devexists-\x2fdev\x2fmapper\x2frhel_dhcp156--104-root.sh: "if ! grep -q After=remote-fs-pre.target /run/systemd/generator/systemd-cryptsetup@*.service 2>/dev/null; then
......
......
         Starting Dracut Emergency Shell...
Warning: /dev/mapper/rhel_dhcp156--104-root does not exist
Warning: /dev/rhel_dhcp156-104/root does not exist
Warning: /dev/rhel_dhcp156-104/swap does not exist

Generating "/run/initramfs/rdsosreport.txt"

Expected results:
The guest should boot up successfully.

Additional info: