nvmet: fix byte swap in nvmet_execute_write_zeroes

The length field in the Write Zeroes command is a 16-bit field.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>

drivers/nvme/target/io-cmd.c

@@ -180,7 +180,7 @@ static void nvmet_execute_write_zeroes(struct nvmet_req *req)
 
 	sector = le64_to_cpu(write_zeroes->slba) <<
 		(req->ns->blksize_shift - 9);
-	nr_sector = (((sector_t)le32_to_cpu(write_zeroes->length)) <<
+	nr_sector = (((sector_t)le16_to_cpu(write_zeroes->length)) <<
 		(req->ns->blksize_shift - 9)) + 1;
 
 	if (__blkdev_issue_zeroout(req->ns->bdev, sector, nr_sector,