diff --git a/drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c b/drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c
index 53bdab66cf15..9a8a38d98cce 100644
--- a/drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c
+++ b/drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c
@@ -657,7 +657,7 @@ static int mtk_mfg_attach_dev(struct generic_pm_domain *pd, struct device *dev)
 	struct mtk_mfg *mfg = mtk_mfg_from_genpd(pd);
 	struct dev_pm_opp_data *so = mfg->stack_opps;
 	struct dev_pm_opp_data *go = mfg->gpu_opps;
-	struct dev_pm_opp_data *prev_o;
+	struct dev_pm_opp_data *prev_o = NULL;
 	struct dev_pm_opp_data *o;
 	int i, ret;