[GPU] Check conditions separately by user

Author: kelvinchoi-intel

src/plugins/intel_gpu/src/graph/graph_optimizer/prepare_buffer_fusing.cpp

@@ -503,11 +503,15 @@ void prepare_buffer_fusing::run(program& p) {
                     return;
                 if (user->is_type<loop>() || user->is_type<non_max_suppression>())
                     return;
+            }
+            for (auto user : node.get_users()) {    
                 if (user->is_type<reshape>()) {
                     auto& reshape_node = user->as<reshape>();
                     if (can_reshape_be_optimized(reshape_node))
                         return;
                 }
+            }
+            for (auto user : node.get_users()) {
                 if (user->is_type<experimental_detectron_roi_feature_extractor>() && user->get_dependency_index(node) == 0)
                     return;
             }