diff --git a/drivers/mmc/host/dw_mmc-starfive.c b/drivers/mmc/host/dw_mmc-starfive.c
index 40f5969b07a6..dab1508bf83c 100644
--- a/drivers/mmc/host/dw_mmc-starfive.c
+++ b/drivers/mmc/host/dw_mmc-starfive.c
@@ -51,7 +51,7 @@ static int dw_mci_starfive_execute_tuning(struct dw_mci_slot *slot,
 	struct dw_mci *host = slot->host;
 	struct starfive_priv *priv = host->priv;
 	int rise_point = -1, fall_point = -1;
-	int err, prev_err;
+	int err, prev_err = 0;
 	int i;
 	bool found = 0;
 	u32 regval;