scsi: qla2xxx: Use list_move_tail() instead of list_del()/list_add_tail()

Using list_move_tail() instead of list_del() + list_add_tail().

Link: https://lore.kernel.org/r/20210609072321.1356896-1-libaokun1@huawei.comReported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_target.c

@@ -5479,8 +5479,7 @@ qlt_free_qfull_cmds(struct qla_qpair *qpair)
 			    "%s: Unexpected cmd in QFull list %p\n", __func__,
 			    cmd);
 
-		list_del(&cmd->cmd_list);
-		list_add_tail(&cmd->cmd_list, &free_list);
+		list_move_tail(&cmd->cmd_list, &free_list);
 
 		/* piggy back on hardware_lock for protection */
 		vha->hw->tgt.num_qfull_cmds_alloc--;