Custom loop pagination issue ( pagination not showing up )

Step:1 Put step 1 code in function.php

// numbered pagination
function pagination($pages="", $range = 4)
{  
     $showitems = ($range * 2)+1;  

     global $paged;
     if(empty($paged)) $paged = 1;

     if($pages == '')
     {
         global $wp_query;
         $pages = $wp_query->max_num_pages;
         if(!$pages)
         {
             $pages = 1;
         }
     }   

     if(1 != $pages)
     {
         echo "<div class=\"pagination\"><span>Page ".$paged." of ".$pages."</span>";
         if($paged > 2 && $paged > $range+1 && $showitems < $pages) echo "<a href="".get_pagenum_link(1)."">&laquo; First</a>";
         if($paged > 1 && $showitems < $pages) echo "<a href="".get_pagenum_link($paged - 1)."">&lsaquo; Previous</a>";

         for ($i=1; $i <= $pages; $i++)
         {
             if (1 != $pages &&( !($i >= $paged+$range+1 || $i <= $paged-$range-1) || $pages <= $showitems ))
             {
                 echo ($paged == $i)? "<span class=\"current\">".$i."</span>":"<a href="".get_pagenum_link($i)."" class=\"inactive\">".$i."</a>";
             }
         }

         if ($paged < $pages && $showitems < $pages) echo "<a href=\"".get_pagenum_link($paged + 1)."\">Next &rsaquo;</a>";  
         if ($paged < $pages-1 &&  $paged+$range-1 < $pages && $showitems < $pages) echo "<a href="".get_pagenum_link($pages)."">Last &raquo;</a>";
         echo "</div>\n";
     }
}
?>

Step:2

<?php
$paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;

$args = array(
   'posts_per_page' => 6,
   'paged' => $paged
);

Step: 3 After while loop completed before wp_reset_query();

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

NOTE: Reference link : after while change wp_reset_query(); TO wp_reset_postdata();