[Membership 2 Pro Plugin] The following mu-plugin/snippet will redirect user back to the page from where they cam from after login.

ms_redirect_to_referrer_after_login.php

<?php
function ms_redirect_to_referrer_after_login( $defaults ){

	$referrer = wp_get_referer();

	if( $referrer ){
		$defaults['redirect_login'] = $referrer;
	}
	

	return $defaults;

}
add_filter('ms_view_shortcode_login_data', 'ms_redirect_to_referrer_after_login');