I am trying to create the below function in my theme's function.php file and call it from my taxonomy.php file via

query_brands_geo('dealers', 'publish', '1', $taxtype, $geo, $brands);

all variables are set in taxonomy.php.

The below query works perfect if I put it directly in my taxonomy.php file. What am I missing to make this work as a function?

As a function I get this error statement for argument repeated for 2-6:

Warning: Missing argument 2 for query_brands_geo()

function query_brands_geo($posttype, $poststatus, $paidvalue, $taxtype, $geo, $brands) {
    /* Custom Query for a brand/geo combination to display dealers with a certain brand and geography */
    //Query only for brands/geography combo and paid dealers

    $wp_query = new WP_Query();

     $args = array(
       'post_type' => '$posttype',
       'post_status' => array($poststatus),
       'orderby' => 'rand', 
       'posts_per_page' => 30,
       'meta_query' => array(
           array(
               'key' => 'wpcf-paid',
               'value' => array($paidvalue),
               'compare' => 'IN',
           )
       ),
        'tax_query' => array(
            'relation' => 'AND',
                array(
                    'taxonomy' => $taxtype,
                    'field' => 'slug',
                    'terms' => $geo
                ),
                array(
                    'taxonomy' => 'brands',
                    'field' => 'slug',
                    'terms' => $brands
                )

            )

        );
    $wp_query->query($args);

}
add_action( 'after_setup_theme', 'query_brands_geo' );