Stop redirecting to WP login page from WPMU membership widget

code.php

<?php
add_action( 'wp_login_failed', 'my_front_end_login_fail' );

function my_front_end_login_fail( $username ) {
   $referrer = $_SERVER['HTTP_REFERER'];
   $findme   = '?login=failed';
   $pos = strpos( $referrer, $findme );
   
   if ( !empty($referrer) && !strstr($referrer,'wp-login') && !strstr($referrer,'wp-admin') ) {
	if( $pos === false ) {
		wp_redirect( $referrer . '?login=failed' );
	}
	else
		wp_redirect( $referrer ); 
	exit;
   }
}

add_action( 'wp_footer', 'show_error_msg' );
function show_error_msg() {
	if( isset( $_REQUEST['login'] ) && $_REQUEST['login'] == 'failed' ) {
	?>
	<script type="text/javascript">
	jQuery(function($){
		$('.membershiploginwidget #loginform').prepend('<p style="color:red">Your username or password is wrong. Please try again.</p>');
	});
	</script>
	<?php
	}
}