drm/vmwgfx: switch to ttm_sg_tt_init

According to Daniel VMWGFX doesn't support DMA-buf anyway.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/403834/

drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c

@@ -611,8 +611,8 @@ static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo,
 	vmw_be->mob = NULL;
 
 	if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent)
-		ret = ttm_dma_tt_init(&vmw_be->dma_ttm, bo, page_flags,
-				      ttm_cached);
+		ret = ttm_sg_tt_init(&vmw_be->dma_ttm, bo, page_flags,
+				     ttm_cached);
 	else
 		ret = ttm_tt_init(&vmw_be->dma_ttm, bo, page_flags,
 				  ttm_cached);