Btrfs: fix possible memory leak in find_parent_nodes()

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 980e85a264c0..ae798c1d088b 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -911,7 +911,6 @@ again:
 
         while (!list_empty(&prefs)) {
                 ref = list_first_entry(&prefs, struct __prelim_ref, list);
-                list_del(&ref->list);
                 WARN_ON(ref->count < 0);
                 if (ref->count && ref->root_id && ref->parent == 0) {
                         /* no parent == root of tree */
@@ -956,6 +955,7 @@ again:
                                 eie->next = ref->inode_list;
                         }
                 }
+                list_del(&ref->list);
                 kfree(ref);
         }