drm/vram: Unconditonally set BO call-back functions

The statement's condition is always true.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190911110910.30698-5-tzimmermann@suse.de

drivers/gpu/drm/drm_gem_vram_helper.c

@@ -93,7 +93,6 @@ static int drm_gem_vram_init(struct drm_device *dev,
 	int ret;
 	size_t acc_size;
 
-	if (!gbo->bo.base.funcs)
 	gbo->bo.base.funcs = &drm_gem_vram_object_funcs;
 
 	ret = drm_gem_object_init(dev, &gbo->bo.base, size);