block: fix missing blkcg_bio_issue_init

The commit 51361684 ("block: remove superfluous calls to
blkcg_bio_issue_init") has removed blkcg_bio_issue_init from
__bio_clone since submit_bio will override ->bi_issue.
However, __blk_queue_split is called after blkcg_bio_issue_init
(see blk_mq_submit_bio) in submit_bio. In this case, the
->bi_issue is 0. Fix it.

Fixes: 51361684 ("block: remove superfluous calls to blkcg_bio_issue_init")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Link: https://lore.kernel.org/r/20220713140226.68135-1-songmuchun@bytedance.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-merge.c

@@ -345,6 +345,7 @@ void __blk_queue_split(struct request_queue *q, struct bio **bio,
 		/* there isn't chance to merge the splitted bio */
 		split->bi_opf |= REQ_NOMERGE;
 
+		blkcg_bio_issue_init(split);
 		bio_chain(split, *bio);
 		trace_block_split(split, (*bio)->bi_iter.bi_sector);
 		submit_bio_noacct(*bio);