soc: mediatek: mtk-svs: delete node name check

The function  svs_add_device_link is called only internally from the SoC
specific probe functions. We don't need to check if the node_name is
null because that would mean that we have a buggy SoC probe function in
the first place.

Reviewed-by: Roger Lu <roger.lu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230209162403.21113-1-matthias.bgg@kernel.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Author: mbgg

drivers/soc/mediatek/mtk-svs.c

@@ -2027,11 +2027,6 @@ static struct device *svs_add_device_link(struct svs_platform *svsp,
 	struct device *dev;
 	struct device_link *sup_link;
 
-	if (!node_name) {
-		dev_err(svsp->dev, "node name cannot be null\n");
-		return ERR_PTR(-EINVAL);
-	}
-
 	dev = svs_get_subsys_device(svsp, node_name);
 	if (IS_ERR(dev))
 		return dev;