working wordpress loop with pagination

<?php

/**
 * A loop a gives post previews and pagination
 */

function sw_paginated_blog_loop()
{

        $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;


        $args = array(
                'post_type'           => 'post',
                'orderby'             => 'menu_order',
                'order'               => 'ASC',
                'posts_per_page'      => '6',
                'paged'               => $paged

        );



        $query = new WP_Query($args); ?>

        <?php if ($query->have_posts()) { ?>

            <div class="superhero-container">

                        <?php while ($query->have_posts()) : $query->the_post(); ?>
                                <div class="superhero">

                                    <h2><?php the_title(); ?></h2>
                                    <?php the_excerpt(); ?>

                                </div>
                        <?php endwhile; ?>
            </div>


	    <?php if ($query->max_num_pages > 1) { // check if the max number of pages is greater than 1  ?>
		<nav class="prev-next-posts">
		    <div class="prev-posts-link">
			<?php echo get_next_posts_link( 'Older Articles', $query->max_num_pages ); // display older posts link ?>
		    </div>
		    <div class="next-posts-link">
			<?php echo get_previous_posts_link( 'Newer Articles' ); // display newer posts link ?>
		    </div>
		</nav>


	    <?php } ?>


            <?php wp_reset_postdata(); ?>

        <?php } //endif
        ?>

<?php } // ends sw_paginated_blog_loop ?>