Need Quick Javascript Fix

Hi,

Looking for someone who is better in JS then me. I've got this running, to identify the country and then change the value of the currency.

<script>

$.ajax({
url: "https://ipinfo.io/json",
type: "GET",
success: function(location) {


if (location.country === 'AU') {
$(".shopify-currency-form select").val("AUD").change();
} else if (location.country === 'AR') {
$(".shopify-currency-form select").val("ARS");
} else if (location.country === 'CA') {
$(".shopify-currency-form select").val("CAD");
} else if (location.country === 'US') {
$(".shopify-currency-form select").val("USD").change();
}
return;
}
} );

$('.shopify-currency-form select').on('change', function() {
$(this)
.parents('form')
.submit();
return;
});
</script>

The above code works, but it keeps refreshing the page over and over. I'd like for this to be once.