update_geofield

<?php

$query = db_select('node', 'n');
$nids = $query
  ->fields('n')
  ->condition('type', 'fitspirator')
  ->execute()
  ->fetchCol();

$nodes = node_load_multiple($nids);
foreach ($nodes as $node) {
  $location = get_the_fucking_location('node', $node);
  field_attach_update('node', $location);
}

function get_the_fucking_location($entity_type, $entity) {
  // Loop over any geofield using our geocode widget
  $entity_info = entity_get_info($entity_type);
  $bundle_name = empty($entity_info['entity keys']['bundle']) ? $entity_type : $entity->{$entity_info['entity keys']['bundle']};
  foreach (field_info_instances($entity_type, $bundle_name) as $field_instance) {
    if ($field_instance['widget']['type'] === 'geocoder') {
      if (($field_value = geocoder_widget_get_field_value($entity_type, $field_instance, $entity)) !== FALSE) {
        $entity->{$field_instance['field_name']} = $field_value;
      }
      else {
        $entity->{$field_instance['field_name']} = array();
      }
    }
  }
  return $entity;
}