WordPress function to redirect to attachment url from attachment page url

redirect_media_page_to_media_file.php

<?php

/**
 * @author Mohammad Murslaeen
 * @function to redirect to attachment url from attachment page url
 */
function mm_media_page_url_to_attachment_url(){

    if( 'attachment' != get_post_type( get_the_ID() ) )
        return;

    wp_redirect( wp_get_attachment_url(  get_the_ID() ) );
    exit;
    
}
add_action( 'template_redirect', 'mm_media_page_url_to_attachment_url' );