$this->getOnepage()->getQuote()->save();
    /**
     * when there is redirect to third party, we don't want to save order yet.
     * we will save the order in return action.
     */
    if (isset($redirectUrl)) {
        $result['redirect'] = $redirectUrl;
    }

$this->getOnepage()->saveOrder();

$redirectUrl = $this->getOnepage()->getCheckout()->getRedirectUrl();