Get all meta boxes values

by

I tried to use WP_Query and it works fine.

<?php
    $args = array('post_type' => 'institution');
    $the_query = new WP_Query($args);

    while ( $the_query->have_posts() ) : $the_query->next_post();
    $id= $the_query->post->ID;
    $location = get_post_meta($id, 'institution_location', true);
    echo $location;
    endwhile;
?>