Site is white and will not load when child theme is active

Hello.

Not sure what happened.

I tried to insert an iframe command into my functions.php file, which of course did not work. So I removed it.
Now when the child theme is active I cannot get into word press, and O have to SFTP in and remove it.

The error I get is:
Warning: Cannot modify header information – headers already sent by (output started at /home/content/p3pnexwpnas04_data02/42/2342542/html/wp-content/themes/raindrops-child/functions.php:1) in /home/content/p3pnexwpnas04_data02/42/2342542/html/wp-includes/pluggable.php on line 1179

Here is my functions.php file:

<?php

add_action( 'wp_enqueue_scripts', 'enqueue_parent_theme_style' );
function enqueue_parent_theme_style() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri().'/style.css' );
}

add_filter( 'raindrops_footer_text', 'function_name' );

function function_name( $return_value ) {
        $return_value = '';
	$html_before = '<p style="text-align:center;color:red;">2014 ALL-Serve Niagara</p>';

	return $html_before . $return_value ;
}

And my style.css:

/*
 Theme Name:   Raindrops Child
 Template:     raindrops
 Version: 1.0
*/

.hentry li{
    margin-bottom:0;
}

Thanks,
Paul