Description of problem:
When trying to generate a signature using an RSA private key from a PKCS#11 device through the openssl-pkcs11 engine in FIPS mode, OpenSSL returns an error similar to:

RSA_new_method:non FIPS rsa method

Version-Release number of selected component (if applicable):
openssl-1.1.1c-9.el8.x86_64
openssl-pkcs11-0.4.10-1.el8.x86_64

How reproducible:
always

Steps to Reproduce:
The following reproducer requires softhsm and gnutls-utils installed.

1. Initialize a SoftHSM device
$ softhsm2-util --init-token --label softhsm --free --pin 1234 --so-pin 1234

2. Generate an RSA key pair
$ p11tool --generate-privkey=RSA --bits=2048 --login pkcs11:token=softhsm --set-pin=1234 --label=test

3. List objects (optional step)
$ p11tool --list-all --login pkcs11:token=softhsm?pin-value=1234

4. Generate an input file
$ echo secret > in.txt

5. Request a signature using the key from the device
$ openssl pkeyutl -engine pkcs11 -keyform engine -inkey "pkcs11:token=softhsm;object=test;type=private?pin-value=1234" -sign -out signature -in in.txt

Actual results:
engine "pkcs11" set.
PKCS11_get_private_key returned NULL
cannot load Private Key from engine
140026202888000:error:0406A0C8:rsa routines:RSA_new_method:non FIPS rsa method:crypto/rsa/rsa_lib.c:94:
140026202888000:error:26096080:engine routines:ENGINE_load_private_key:failed loading private key:crypto/engine/eng_pkey.c:78:
unable to load Private Key
pkeyutl: Error initializing context
Segmentation fault (core dumped)

Expected results:
Signature is successfully generated and output to the "signature" file

Additional info:
The core dump occurs due to a known issue in SoftHSM (see https://github.com/opendnssec/SoftHSMv2/pull/503)