[Inductor][CPP] Fix the test case of test_linear_reuse_kernels (#163723)

Fixes #163491.
Add tolerances to make `test_linear_reuse_kernels` more stable.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/163723
Approved by: https://github.com/leslie-fang-intel

test/inductor/test_cpu_select_algorithm.py

@@ -2936,10 +2936,20 @@ class TestSelectAlgorithm(BaseTestSelectAlgorithm):
 
         x = torch.randn(batch_size, in_features).to(dtype=dtype)
         mod = M().to(dtype=dtype).eval()
-        self.common(mod, (x))
-        _, code = run_and_get_cpp_code(mod, x)
-        # Check that only 2 kernels are in the generated code
-        assert code.count("AMXState amx_state") == 2
+        with verify(dtype) as (atol, rtol):
+            ref_res = mod(x)
+            m = torch.compile(mod)
+            res, code = run_and_get_cpp_code(m, x)
+            self.assertEqual(
+                res,
+                ref_res,
+                atol=atol,
+                rtol=rtol,
+                equal_nan=True,
+                exact_dtype=True,
+            )
+            # Check that only 2 kernels are in the generated code
+            assert code.count("AMXState amx_state") == 2
 
 
 @dynamo_config.patch({"dynamic_shapes": True, "assume_static_by_default": False})