blk-mq: Clean up blk_mq_requeue_work()

Move a statement that occurs in both branches of an if-statement in front
of the if-statement. Fix a typo in a source code comment. No functionality
has been changed.

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20241212212941.1268662-3-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-mq.c

@@ -1544,19 +1544,17 @@ static void blk_mq_requeue_work(struct work_struct *work)
 
 	while (!list_empty(&rq_list)) {
 		rq = list_entry(rq_list.next, struct request, queuelist);
+		list_del_init(&rq->queuelist);
 		/*
-		 * If RQF_DONTPREP ist set, the request has been started by the
+		 * If RQF_DONTPREP is set, the request has been started by the
 		 * driver already and might have driver-specific data allocated
 		 * already.  Insert it into the hctx dispatch list to avoid
 		 * block layer merges for the request.
 		 */
-		if (rq->rq_flags & RQF_DONTPREP) {
-			list_del_init(&rq->queuelist);
+		if (rq->rq_flags & RQF_DONTPREP)
 			blk_mq_request_bypass_insert(rq, 0);
-		} else {
-			list_del_init(&rq->queuelist);
+		else
 			blk_mq_insert_request(rq, BLK_MQ_INSERT_AT_HEAD);
-		}
 	}
 
 	while (!list_empty(&flush_list)) {