Query Posts pagination issue solved

<?php get_header();?>
            <div style="clear:both"></div>
            <div class="maincontent_area fix">
                <div class="content_left floatleft fix shadow">

    <?php if(!is_paged()) { ?>
                <?php
                    $args = array( 'post_type' => 'post','posts_per_page' => 2, 'paged' => $paged );
                    $loop = new WP_Query( $args );
                ?>
                <?php while ( $loop->have_posts() ) : $loop->the_post(); ?>


                    <div class="single_content fix">
                        <h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
                        <a href="<?php the_permalink();?>"><?php the_post_thumbnail('thumb', array('class' => 'imgthumb')); ?></a>
                        <p><?php echo excerpt('60'); ?> </p>
                        <?php get_template_part( 'postmeta' ); // Post Meta (postmeta.php) ?>

                    </div>
                    <div class="line fix"></div>





                <?php endwhile; ?>
                <?php wp_reset_query(); ?>
                <?php } ?>




        </div>


    <?php if (function_exists("pagination")) {
             pagination($additional_loop->max_num_pages);
     } ?>


<?php get_sidebar();?>
            </div>
        </div>
<?php get_footer();?>