drm/amdgpu: add check before free wb entry

Check if ring is not a mes queue before freeing the wb entry,
because we only allocate a wb entry when it's not a mes queue.
Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c

@@ -999,6 +999,7 @@ static int sdma_v5_0_ring_test_ring(struct amdgpu_ring *ring)
 	r = amdgpu_ring_alloc(ring, 20);
 	if (r) {
 		DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
+		if (!ring->is_mes_queue)
 			amdgpu_device_wb_free(adev, index);
 		return r;
 	}

drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c

@@ -839,6 +839,7 @@ static int sdma_v5_2_ring_test_ring(struct amdgpu_ring *ring)
 	r = amdgpu_ring_alloc(ring, 20);
 	if (r) {
 		DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
+		if (!ring->is_mes_queue)
 			amdgpu_device_wb_free(adev, index);
 		return r;
 	}

drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c

@@ -861,6 +861,7 @@ static int sdma_v6_0_ring_test_ring(struct amdgpu_ring *ring)
 	r = amdgpu_ring_alloc(ring, 5);
 	if (r) {
 		DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
+		if (!ring->is_mes_queue)
 			amdgpu_device_wb_free(adev, index);
 		return r;
 	}