btrfs: handle errors returned from get_tree_block_key

Signed-off-by: David Sterba <dsterba@suse.cz>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index d338df405e72..704a1b8d2a2b 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2875,7 +2875,7 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans,
         path = btrfs_alloc_path();
         if (!path) {
                 err = -ENOMEM;
-                goto out_path;
+                goto out_free_blocks;
         }
 
         rb_node = rb_first(blocks);
@@ -2889,8 +2889,11 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans,
         rb_node = rb_first(blocks);
         while (rb_node) {
                 block = rb_entry(rb_node, struct tree_block, rb_node);
-                if (!block->key_ready)
-                        get_tree_block_key(rc, block);
+                if (!block->key_ready) {
+                        err = get_tree_block_key(rc, block);
+                        if (err)
+                                goto out_free_path;
+                }
                 rb_node = rb_next(rb_node);
         }
 
@@ -2917,8 +2920,9 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans,
 out:
         err = finish_pending_nodes(trans, rc, path, err);
 
+out_free_path:
         btrfs_free_path(path);
-out_path:
+out_free_blocks:
         free_block_list(blocks);
         return err;
 }