blk-mq: remove pointless call of list_entry_rq() in hctx_show_busy_rq()

Just use rq directly, the usage of list_entry_rq() doesn't make any
sense.

Signed-off-by: Hou Tao <[email protected]>
Reviewed-by: Ming Lei <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>

block/blk-mq-debugfs.c

@@ -401,8 +401,7 @@ static bool hctx_show_busy_rq(struct request *rq, void *data, bool reserved)
 	const struct show_busy_params *params = data;
 
 	if (rq->mq_hctx == params->hctx)
-		__blk_mq_debugfs_rq_show(params->m,
-					 list_entry_rq(&rq->queuelist));
+		__blk_mq_debugfs_rq_show(params->m, rq);
 
 	return true;
 }