drm/amdgpu: gfx support ras gpu reset

request a gpu reset if ras return EAGAIN.
we will run late init again so it is ok to do nothing this time.
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -3825,8 +3825,14 @@ static int gfx_v9_0_ecc_late_init(void *handle)
 	**ras_if = ras_block;
 
 	r = amdgpu_ras_feature_enable_on_boot(adev, *ras_if, 1);
-	if (r)
+	if (r) {
+		if (r == -EAGAIN) {
+			amdgpu_ras_request_reset_on_boot(adev,
+					AMDGPU_RAS_BLOCK__GFX);
+			r = 0;
+		}
 		goto feature;
+	}
 
 	ih_info.head = **ras_if;
 	fs_info.head = **ras_if;
@@ -3859,7 +3865,7 @@ static int gfx_v9_0_ecc_late_init(void *handle)
 feature:
 	kfree(*ras_if);
 	*ras_if = NULL;
-	return -EINVAL;
+	return r;
 }
 
 static int gfx_v9_0_late_init(void *handle)