WordPress query reverse order

Since you are using 'post__in' in the 'orderby' parameter, the 'order' parameter will have no effect, however, you can simply reverse the array you are passing to 'post__in':

$args = array(
                'post_type' => 'etlap',
                'posts_per_page' => 5,
                'post__in' => array_reverse($ids),
                'post_status' => 'any',
                'orderby' => 'post__in'
             );