Site crashing

[ Moderator note: moved to How-to and Troubleshooting. ]

I inserted this code to make users return to homepage upon logging out:

add_action(‘wp_logout’,’go_home’);
function go_home(){
wp_redirect( home_url() );
exit();
}

I inserted it at the end of the theme functions section, saved it and it worked great. Then I fooled with it to see if I could duplicate the function for logging in, and when I saved it again I got this:

Fatal error: Cannot redeclare go_home() (previously declared in /home1/accountadmin/public_html/wp-content/themes/mh_newsdesk/functions.php:124) in /home1/accountadmin/public_html/wp-content/themes/mh_newsdesk/functions.php on line 132

So I deleted all the code, making the file exactly as it was before I touched it, and when I tried to resave I got the same error. Now there is no way to access anything to do with the site or my dashboard without getting that error!