Hmm can you try this?
add_filter( 'generate_logo_output','tu_logo_atts', 10, 2 );
function tu_logo_atts( $output, $logo ) {
printf(
'<div class="site-logo">
<a href="%1$s" title="%2$s" rel="home">
<img width="200" height="200" class="header-image" src="%3$s" alt="%2$s" title="%2$s" />
</a>
</div>',
esc_url( apply_filters( 'generate_logo_href' , home_url( '/' ) ) ),
esc_attr( apply_filters( 'generate_logo_title', get_bloginfo( 'name', 'display' ) ) ),
esc_url( apply_filters( 'generate_logo', $logo ) )
);
}