btrfs: add missing iputs on orphan cleanup failure

We missed a couple of iput()s in the orphan cleanup failure paths, add
them so we don't get refcount errors. The iput needs to be done in the
check and not under a common label due to the way the code is
structured.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -3691,15 +3691,18 @@ int btrfs_orphan_cleanup(struct btrfs_root *root)
 			trans = btrfs_start_transaction(root, 1);
 			if (IS_ERR(trans)) {
 				ret = PTR_ERR(trans);
+				iput(inode);
 				goto out;
 			}
 			btrfs_debug(fs_info, "auto deleting %Lu",
 				    found_key.objectid);
 			ret = btrfs_del_orphan_item(trans, root,
 						    found_key.objectid);
 			btrfs_end_transaction(trans);
-			if (ret)
+			if (ret) {
+				iput(inode);
 				goto out;
+			}
 			continue;
 		}