drm/amdgpu: For GFX 9.4.3 APU fix vram_usage value

For GFX 9.4.3 APP APU VRAM is allocated in GTT domain. While freeing
memory check for GTT domain instead of VRAM if it is APP APU
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1886,11 +1886,14 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 	}
 
 	/* Update the size of the BO being freed if it was allocated from
-	 * VRAM and is not imported.
+	 * VRAM and is not imported. For APP APU VRAM allocations are done
+	 * in GTT domain
 	 */
 	if (size) {
-		if ((mem->bo->preferred_domains == AMDGPU_GEM_DOMAIN_VRAM) &&
-		    (!is_imported))
+		if (!is_imported &&
+		   (mem->bo->preferred_domains == AMDGPU_GEM_DOMAIN_VRAM ||
+		   (adev->gmc.is_app_apu &&
+		    mem->bo->preferred_domains == AMDGPU_GEM_DOMAIN_GTT)))
 			*size = bo_size;
 		else
 			*size = 0;