drm: rcar-du: Drop unneeded encoder cleanup in error path

The encoder->name field can never be non-null in the error path, as that
can only be possible after a successful call to
drm_simple_encoder_init(). Drop the cleanup.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

drivers/gpu/drm/rcar-du/rcar_du_encoder.c

@@ -123,11 +123,8 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu,
 	}
 
 done:
-	if (ret < 0) {
-		if (encoder->name)
-			encoder->funcs->destroy(encoder);
+	if (ret < 0)
 		devm_kfree(rcdu->dev, renc);
-	}
 
 	return ret;
 }