var c = ic.filterBounds(geometry);

var withCloudiness = c.map(function(image) {
  var cloud = ee.Algorithms.Landsat.simpleCloudScore(image).select('cloud');
  var cloudiness = cloud.reduceRegion({
    reducer: 'mean',
    geometry: geometry,
    scale: 30,
    maxPixels: 1e9
  });
  return image.set(cloudiness);
});