Fix call once logic (#7839)

* fix call once logic

* clean up

* further clean up

paddle/platform/call_once.h

@@ -29,20 +29,25 @@ namespace platform {
 */
 template <typename Callable, typename... Args>
 inline void call_once(std::once_flag& flag, Callable&& f, Args&&... args) {
-  bool good = false;
+  bool good = true;
   std::exception ex;
+  try {
     std::call_once(flag,
                    [&](Args&&... args) {
                      try {
                        f(args...);
-                     good = true;
                      } catch (const std::exception& e) {
                        ex = e;
+                       good = false;
                      } catch (...) {
                        ex = std::runtime_error("excption caught in call_once");
+                       good = false;
                      }
                    },
                    args...);
+  } catch (std::system_error& x) {
+    throw std::runtime_error("call once failed");
+  }
   if (!good) {
     throw std::exception(ex);
   }