Add Search Form To Nav Menu In Genesis

functions.php

add_filter( 'wp_nav_menu_items', 'add_search_genesis_menu', 10, 2 );
function add_search_genesis_menu( $menu, $args ) {

if ( 'primary' !== $args->theme_location )
    return $menu;

    ob_start();
	get_search_form();
	$search = ob_get_clean();
	$menu  .= '<li class="search">' . $search . '</li>';

    return $menu;
}