cherry-pick fix muting glog warning message, test=release/1.6 (#21576)

Author: Pei Yang

paddle/fluid/inference/api/analysis_predictor.cc

@@ -477,6 +477,10 @@ void AnalysisPredictor::OptimizeInferenceProgram() {
 template <>
 std::unique_ptr<PaddlePredictor> CreatePaddlePredictor<
     AnalysisConfig, PaddleEngineKind::kAnalysis>(const AnalysisConfig &config) {
+  if (config.glog_info_disabled()) {
+    FLAGS_logtostderr = 1;
+    FLAGS_minloglevel = 2;  // GLOG_ERROR
+  }
   VLOG(3) << "create AnalysisConfig";
   PADDLE_ENFORCE(config.is_valid(),
                  "Note: Each config can only be used for one predictor.");
@@ -508,11 +512,6 @@ std::unique_ptr<PaddlePredictor> CreatePaddlePredictor<
       framework::InitGflags(flags);
     }
   }
-  framework::InitGLOG("");
-  if (config.glog_info_disabled()) {
-    FLAGS_logtostderr = 1;
-    FLAGS_minloglevel = 2;  // GLOG_ERROR
-  }
 
   std::unique_ptr<PaddlePredictor> predictor(new AnalysisPredictor(config));
   // Each config can only be used for one predictor.