drm/drm-bridge: Drop conditionals around of_node pointers

Having conditional around the of_node pointer of the drm_bridge structure
is not necessary, since drm_bridge structure always has the of_node as its
member.

Let's drop the conditional to get a better looks, please also note that
this is following the already accepted commitments. see commit d8dfccde
("drm/bridge: Drop conditionals around of_node pointers") for reference.
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240507180001.1358816-1-sui.jingfeng@linux.dev

drivers/gpu/drm/drm_bridge.c

@@ -353,13 +353,8 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
 	bridge->encoder = NULL;
 	list_del(&bridge->chain_node);
 
-#ifdef CONFIG_OF
 	DRM_ERROR("failed to attach bridge %pOF to encoder %s: %d\n",
 		  bridge->of_node, encoder->name, ret);
-#else
-	DRM_ERROR("failed to attach bridge to encoder %s: %d\n",
-		  encoder->name, ret);
-#endif
 
 	return ret;
 }