wined3d: Initialize the map binding in resource_init.

dlls/wined3d/resource.c

@@ -110,6 +110,7 @@ HRESULT resource_init(struct wined3d_resource *resource, struct wined3d_device *
     resource->parent = parent;
     resource->parent_ops = parent_ops;
     resource->resource_ops = resource_ops;
+    resource->map_binding = WINED3D_LOCATION_SYSMEM;
 
     if (size)
     {

dlls/wined3d/surface.c

@@ -6006,7 +6006,6 @@ static HRESULT surface_init(struct wined3d_surface *surface, struct wined3d_text
     if (lockable || desc->format == WINED3DFMT_D16_LOCKABLE)
         surface->resource.access_flags |= WINED3D_RESOURCE_ACCESS_CPU;
 
-    surface->resource.map_binding = WINED3D_LOCATION_SYSMEM;
     surface->texture_target = target;
     surface->texture_level = level;
     surface->texture_layer = layer;

dlls/wined3d/volume.c

@@ -824,7 +824,6 @@ static HRESULT volume_init(struct wined3d_volume *volume, struct wined3d_texture
 
     volume->texture_level = level;
     volume->locations = WINED3D_LOCATION_DISCARDED;
-    volume->resource.map_binding = WINED3D_LOCATION_SYSMEM;
 
     if (desc->pool == WINED3D_POOL_DEFAULT && desc->usage & WINED3DUSAGE_DYNAMIC
             && gl_info->supported[ARB_PIXEL_BUFFER_OBJECT]