ntfs3: use bdev_nr_bytes instead of open coding it

Use the proper helper to read the block device size.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211018101130.1838532-21-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

fs/ntfs3/super.c

@@ -921,7 +921,7 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
 
 	/* Parse boot. */
 	err = ntfs_init_from_boot(sb, rq ? queue_logical_block_size(rq) : 512,
-				  bdev->bd_inode->i_size);
+				  bdev_nr_bytes(bdev));
 	if (err)
 		goto out;