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Description of problem:
When I created a connection with sriov.total-vfs 2 and upped it I saw two new VFs (virtual functions) created. After modifying to 0 and reconnecting I could still saw two. When I modified to 1 it was working well and just one VS was available

Version-Release number of selected component (if applicable):
NetworkManager-1.14.0-5.el8.x86_64

How reproducible:
always

Steps to Reproduce:
1. nmcli con add type ethernet ifname \* sriov.total-vfs 2 con-name vfs
2. nmcli con up vfs
3. nmcli con mod vfs sriov.total-vfs 0
4. nmcli con up vfs


Actual results:
still 2 VFs

Expected results:
just real device should be present, no VFs

Additional info:

https://github.com/NetworkManager/NetworkManager/pull/258

deleting when we probe for drivers works as expected but:
    @sriov_con_set_VF_to_0
    Scenario: nmcli - sriov - add 1 VF
    * Add a new connection of type "ethernet" and options "ifname em2 con-name sriov sriov.total-vfs 1 sriov.autoprobe-drivers false"
    * Execute "nmcli connection modify sriov sriov.total-vfs 0"
    * Bring "up" connection "sriov"
    Then "1" is not visible with command "cat /sys/class/net/em2/device/sriov_numvfs"
    And "vf 0" is not visible with command "ip link show dev em2 |grep 'vf 0'"


is stalled in 
    * Bring "up" connection "sriov"

I will file a separate bug for this.

as said, bug 1659514 is still here, in driver mode true it's working well.