Fix a bug.

src/ngraph/runtime/cpu/cpu_external_function.cpp

@@ -1172,12 +1172,19 @@ void runtime::cpu::CPU_ExternalFunction::process_in_place_concat(
                     bool found_last_concat = true;
                     for (auto user : concat->get_users())
                     {
-                        if (dynamic_pointer_cast<ngraph::op::Concat>(user))
+                        if (auto user_concat = dynamic_pointer_cast<ngraph::op::Concat>(user))
+                        {
+                            if (auto op_annotations = user_concat->get_op_annotations())
+                            {
+                                auto in_place_oi_pairs = op_annotations->get_in_place_oi_pairs();
+                                if (in_place_oi_pairs.size() > 0)
                                 {
                                     found_last_concat = false;
                                     break;
                                 }
                             }
+                        }
+                    }
 
                     if (found_last_concat)
                     {