I’m not sure why blacklisting the Linux kernel’s tpm module has anything to do with grub’s tpm module in reference to Jeff V’s response, but it’s not correct in this particular issue.
The issue is in grub not supporting TPM 2.0 likely very well when enabled in UEFI System Settings. The more basic functional fix to this is actually relatively simple to fix.
In /etc/grub.d/ create 02_tpm with the contents:
#!/usr/bin/sh -e
echo "rmmod tpm"
and chmod +x it.
Run grub2-mkconfig -o /etc/grub2.cfg and your problem is mitigated for the time being. This is NOT a fix, just a mitigation for current issues with grub and TPM support specifically.