scsi: lpfc: Fix error code if kcalloc() fails

This should return -ENOMEM if kcalloc() fails, but it accidentally
returns success instead.

Fixes: 6a828b0f

 ("scsi: lpfc: Support non-uniform allocation of MSIX vectors to hardware queues")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>