scsi: block: Return status code in blk_mq_end_request()

blk_mq_end_request() will use the block status returned from queue_rq() as
argument, except in one instance in blk_mq_dispatch_rq_list(), where the
generic BLK_STS_IOERR is used.

Link: https://lore.kernel.org/r/20200930080256.90964-2-hare@suse.deReviewed-by: NEwan D. Milne <emilne@redhat.com>
Signed-off-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

block/blk-mq.c

@@ -1404,7 +1404,7 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list,
 			break;
 		default:
 			errors++;
-			blk_mq_end_request(rq, BLK_STS_IOERR);
+			blk_mq_end_request(rq, ret);
 		}
 	} while (!list_empty(list));
 out: