diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 4613cb2..78945b5 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1472,7 +1472,7 @@
 		ret = writeback_inode(i1);
 	if (!ret && i2)
 		ret = writeback_inode(i2);
-	if (!ret && sb) {
+	if (!ret) {
 		struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;
 		ret = filemap_flush(mapping);
 	}