Wordpress - Alter login page Logo and corresponding URL

wp_customize_login_page.php

<?php

// Customize the WP Logo, on login page; Replace it with your clients logo
add_action('login_head', 'my_custom_login_page');
function my_custom_login_page() {
    echo '<style type="text/css">
        h1 a {
            background: url('.get_bloginfo('template_directory').'-child/img/logo.png) no-repeat center center !important; 
            width: 200px !important; } 
        .login #login_error{ 
            display:none; }
    </style>';}

// Change the Logo URL, since it points to wordpress.com
add_filter( 'login_headerurl', 'my_login_logo_url' );
function my_login_logo_url() {return home_url();}

// Remove login errors
add_filter( 'login_errors', 'no_wordpress_errors' );
function no_wordpress_errors(){echo '';}

?>