JFS: skip bad iput() call in error path

If jfs_iget() fails, we can't call iput() on the returned error.
Thanks to Eric Sesterhenn's fuzzer testing for reporting the problem.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 50ea65451732..0288e6d7936a 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -499,7 +499,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
         inode = jfs_iget(sb, ROOT_I);
         if (IS_ERR(inode)) {
                 ret = PTR_ERR(inode);
-                goto out_no_root;
+                goto out_no_rw;
         }
         sb->s_root = d_alloc_root(inode);
         if (!sb->s_root)
@@ -521,9 +521,8 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
         return 0;
 
 out_no_root:
-        jfs_err("jfs_read_super: get root inode failed");
-        if (inode)
-                iput(inode);
+        jfs_err("jfs_read_super: get root dentry failed");
+        iput(inode);
 
 out_no_rw:
         rc = jfs_umount(sb);