woocommerce after login redirect

My In my woocommerce login form successful login it is redirection to shop page I did, And after login error it should be same page but it goes /wp-login.php.I got some codes but it is working when I enter wrong username or password but when I put empty user name or password it is going /wp-login.php.Can you help me.

Here is the code

function my_front_end_login_fail( $username,$password )

{

$referrer = $_SERVER['HTTP_REFERER'];

if ( !empty($referrer) && !strstr($referrer,'wp-login') && !strstr($referrer,'wp-admin') )

{

wp_redirect( $referrer . '?login_failed=failed' );

exit;

}

}

Please help me..