always cleanup curl and close file

selfdrive/ui/qt/setup/setup.cc

@@ -41,13 +41,13 @@ void Setup::download(QString url) {
   curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &res_status);
   if (ret != CURLE_OK || res_status != 200) {
     emit finished(false);
-    return;
+  } else {
+    rename(tmpfile, "/tmp/installer");
+    emit finished(true);
   }
+
   curl_easy_cleanup(curl);
   fclose(fp);
-
-  rename(tmpfile, "/tmp/installer");
-  emit finished(true);
 }
 
 QWidget * Setup::low_voltage() {