Fix smatch warning:

fs/ntfs3/attrib.c:1503 attr_wof_frame_info() error: uninitialized symbol
'err'.

Signed-off-by: Ferry Meng <mengferry@linux.alibaba.com>

diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
index a9d82bbb4729..f027c35c7f5f 100644
--- a/fs/ntfs3/attrib.c
+++ b/fs/ntfs3/attrib.c
@@ -1372,7 +1372,7 @@ int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr,
 	u8 bytes_per_off;
 	char *addr;
 	struct page *page;
-	int i, err;
+	int i, err = 0;
 	__le32 *off32;
 	__le64 *off64;
 
-- 
2.19.1.6.gb485710b