Redirect Users to the Previous Page After Login

<?php
if ( ! function_exists( 'scseed_login_redirect_to_referer' ) ) {
    function scseed_login_redirect_to_referer( $redirect_to, $request, $user ) {
        if ( is_wp_error( $user ) || ! is_a( $user, 'WP_User' ) ) {
            return $redirect_to;
        }
        // Admins should still go to the dashboard by default.
        if ( current_user_can( 'manage_options' ) ) {
            return $redirect_to;
        }
        $referer = wp_get_referer();
        if ( $referer &&
             strpos( $referer, 'wp-login.php' ) === false &&
             strpos( $referer, 'wp-admin' ) === false ) {
            return $referer;
        }
        return $redirect_to;
    }
    add_filter( 'login_redirect', 'scseed_login_redirect_to_referer', 10, 3 );
}