reset post id

When using the following code:

<?php $news = get_post_meta($post->ID, 'Related news', false); ?>
<?php if($news) : ?>
<h3>Related news</h3>
<?php foreach ($news as $new) : ?>
<?php $my_query = new WP_Query("p=$new");
while ($my_query->have_posts()) : $my_query->the_post(); ?>
<b><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></b>
<?php endwhile; ?>
<?php endforeach; ?>
<?php endif; ?>

the id of the last ($my_query->have_posts()) : $my_query->the_post(); is being retained. How can I reset id back to current post?