Force 404 pagination only on pages

function pm_force_pagination_404() {
    global $permalink_manager, $post;

    if(!empty($permalink_manager)) {
        $core_functions = $permalink_manager->functions['core-functions'];

        if(!empty($post->post_type) && in_array($post->post_type, array('page'))) {
            add_action('wp', array($core_functions, 'fix_pagination_pages'), 9);
        }
    }
}
add_action('wp', 'pm_force_pagination_404', 0);