drm/amdgpu: add ras fini for nbio

add a common nbio ras fini implementation to cleanup nbio ras framework

Signed-off-by: Tao Zhou <[e-mail]>
Reviewed-by: Guchun Chen <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.c

···
 	adev->nbio.ras_if = NULL;
 	return r;
 }
+
+void amdgpu_nbio_ras_fini(struct amdgpu_device *adev)
+{
+	if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__PCIE_BIF) &&
+			adev->nbio.ras_if) {
+		struct ras_common_if *ras_if = adev->nbio.ras_if;
+		struct ras_ih_if ih_info = {
+			.cb = NULL,
+		};
+
+		amdgpu_ras_late_fini(adev, ras_if, &ih_info);
+		kfree(ras_if);
+	}
+}

drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h

···
 };
 
 int amdgpu_nbio_ras_late_init(struct amdgpu_device *adev);
-
+void amdgpu_nbio_ras_fini(struct amdgpu_device *adev);
 #endif

drivers/gpu/drm/amd/amdgpu/soc15.c

···
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	amdgpu_nbio_ras_fini(adev);
 	adev->df_funcs->sw_fini(adev);
 	return 0;
 }