f2fs: fix wrong error hanlder in f2fs_follow_link

The page_follow_link_light returns NULL and its error pointer was remained
in nd->path.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 3 insertions, 5 deletions

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 7e3794edae42..658e8079aaf9 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -298,16 +298,14 @@ fail:
 
 static void *f2fs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
-        struct page *page;
+        struct page *page = page_follow_link_light(dentry, nd);
 
-        page = page_follow_link_light(dentry, nd);
-        if (IS_ERR(page))
+        if (IS_ERR_OR_NULL(page))
                 return page;
 
         /* this is broken symlink case */
         if (*nd_get_link(nd) == 0) {
-                kunmap(page);
-                page_cache_release(page);
+                page_put_link(dentry, nd, page);
                 return ERR_PTR(-ENOENT);
         }
         return page;