xfs: fix two memory leaks in xfs_attr_list.c error paths

This plugs 2 trivial leaks in xfs_attr_shortform_list and
xfs_attr3_leaf_list_int.

Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
xfs_attr_list_int(
	xfs_attr_list_context_t *context)
{
	int error;
	xfs_inode_t *dp = context->dp;
	uint		lock_mode;

	XFS_STATS_INC(dp->i_mount, xs_attr_list);

	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
		return -EIO;

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	lock_mode = xfs_ilock_attr_map_shared(dp);
	if (!xfs_inode_hasattr(dp)) {
		error = 0;
	} else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
		error = xfs_attr_shortform_list(context);
	} else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
		error = xfs_attr_leaf_list(context);
	} else {
		error = xfs_attr_node_list(context);
	}
	xfs_iunlock(dp, lock_mode);
	return error;
}

xfs_attr_list_int(
	xfs_attr_list_context_t *context)
{
	int error;
	xfs_inode_t *dp = context->dp;
	uint		lock_mode;

	XFS_STATS_INC(dp->i_mount, xs_attr_list);

	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
		return -EIO;

	/*
	 * Decide on what work routines to call based on the inode size.
	 */
	lock_mode = xfs_ilock_attr_map_shared(dp);
	if (!xfs_inode_hasattr(dp)) {
		error = 0;
	} else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
		error = xfs_attr_shortform_list(context);
	} else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
		error = xfs_attr_leaf_list(context);
	} else {
		error = xfs_attr_node_list(context);
	}
	xfs_iunlock(dp, lock_mode);
	return error;
}
