Infinite loop with wp_redirect

Good Morning,
I created a custom work added to my functions.php:

add_action('wp', 'personal_message_when_logged_in' );

function personal_message_when_logged_in() {

	if ( is_user_logged_in() )
	{
		$user = wp_get_current_user();

	        $logincontrol = get_user_meta($user->ID, '_new_user', 'TRUE');
		$acceptPrivacyControl = get_user_meta($user->ID, '_user_accept_privacy', 'TRUE');

		//Se entrambi sono TRUE eseguo il redirect
		if ( $logincontrol and  acceptPrivacyControl) {

			echo $redirect_url = get_site_url() . "/trattamento-dei-dati-personali/";

			wp_redirect( home_url(), 301 ); exit;
		}
	}
}

Tested the value of the two TAG _new_user and are _user_accept_privacy are both TRUE then performs the redirect.

The problem is on wp_redirect:
– If inserted simple wp_redirect ('https://www.example.com', 301); exit; redirect is performed
– If I leave the code as the browser loads indefinitely.

Why?

Thanks.