Mellanox 4 LX and OPNSense

[furfix]

Hi all! Trying to install OPNsense in a Proxmox q35 VM passingthrough my Mellanox 4 LX card to the VM, but while booting OPNsense I can see:

mlx5_core0: WARN: wait_fw_init:733:(pid 0): Waiting for FW initialization, timeout abort in 100 s
mlx5_core0: ERR: Firmware over 120000 MS in pre-initializing state, aborting
mlx5_core0: ERR: init_one:1644:(pid 0): mlx5_load_one failed -16
device_attach: mlx5_core0 attach returned 16

and I can't proceed with the installation.

Anyone else faced this issue before?