fix wrong place in ut (#42486)

python/paddle/fluid/tests/unittests/test_imperative_auto_mixed_precision.py

@@ -919,7 +919,7 @@ class TestPureFp16InferenceSaveLoad(unittest.TestCase):
 
         # load_inference_model
         paddle.enable_static()
-        exe = paddle.static.Executor(paddle.CPUPlace())
+        exe = paddle.static.Executor()
         [inference_program, feed_target_names, fetch_targets] = (
             paddle.static.load_inference_model(path, exe))
         tensor_img = x
@@ -927,8 +927,8 @@ class TestPureFp16InferenceSaveLoad(unittest.TestCase):
                           feed={feed_target_names[0]: tensor_img},
                           fetch_list=fetch_targets)
         print("pred.numpy()", pred.numpy())
-        print("results", results)
-        self.assertTrue(np.allclose(pred.numpy(), results, atol=1.e-5))
+        print("result", results[0])
+        self.assertTrue(np.array_equal(pred.numpy(), results[0]))
         paddle.disable_static()
 
     def test_inference_save_load(self):