Add a missing resource clean up in .remove.

Fixes: e22bae30 ("scsi: mpi3mr: Add expander devices to STL")
Signed-off-by: NTomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20230302234336.25456-7-thenzl@redhat.comAcked-by: NSathya Prakash Veerichetty <sathya.prakash@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>