How to add pagination in between post and comments?

I got my solution.

<?php // move pagination links above other end-of-post content additions, like related posts etc.
function move_pagination( $content ) {
    if ( is_single() ) {
        $pagination = wp_link_pages( array(
                    'before'      => '<div class="page-links"><span class="page-links-title">' . __( 'Pages:', 'firmness' ) . '</span>',
                    'after'       => '</div>',
                    'link_before' => '<span>',
                    'link_after'  => '</span>',
                    'echo'        => 0,
                ) );
        $content .= $pagination;
        return $content;
    }
    return $content;
}

add_filter( 'the_content', 'move_pagination', 1 );

I wrote a new function for this purpose. This belongs in functions.php in my child theme, because it affects the layout of my site, and will not be required any more once my change themes.