diff --git a/block/blk-mq.c b/block/blk-mq.c
index 555ada922cf0..32afb87efbd0 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -770,16 +770,11 @@ static void req_bio_endio(struct request *rq, struct bio *bio,
 		/*
 		 * Partial zone append completions cannot be supported as the
 		 * BIO fragments may end up not being written sequentially.
-		 * For such case, force the completed nbytes to be equal to
-		 * the BIO size so that bio_advance() sets the BIO remaining
-		 * size to 0 and we end up calling bio_endio() before returning.
 		 */
-		if (bio->bi_iter.bi_size != nbytes) {
+		if (bio->bi_iter.bi_size != nbytes)
 			bio->bi_status = BLK_STS_IOERR;
-			nbytes = bio->bi_iter.bi_size;
-		} else {
+		else
 			bio->bi_iter.bi_sector = rq->__sector;
-		}
 	}
 
 	bio_advance(bio, nbytes);