scsi: lpfc: Remove redundant flush_workqueue() call

destroy_workqueue() already drains the queue before destroying it, so there
is no need to flush it explicitly.

Remove the redundant flush_workqueue() call.

Link: https://lore.kernel.org/r/20220127014330.1185114-1-chi.minghao@zte.com.cnReported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao@zte.com.cn>
Signed-off-by: CGEL ZTE <cgel.zte@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_init.c

@@ -8546,7 +8546,6 @@ static void
 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
 {
 	if (phba->wq) {
-		flush_workqueue(phba->wq);
 		destroy_workqueue(phba->wq);
 		phba->wq = NULL;
 	}