diff --git a/drivers/clk/nxp/clk-lpc18xx-ccu.c b/drivers/clk/nxp/clk-lpc18xx-ccu.c
index f7136b94fd0e..27781b49eb82 100644
--- a/drivers/clk/nxp/clk-lpc18xx-ccu.c
+++ b/drivers/clk/nxp/clk-lpc18xx-ccu.c
@@ -277,12 +277,15 @@ static void __init lpc18xx_ccu_init(struct device_node *np)
 	}
 
 	clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
-	if (!clk_data)
+	if (!clk_data) {
+		iounmap(reg_base);
 		return;
+	}
 
 	clk_data->num = of_property_count_strings(np, "clock-names");
 	clk_data->name = kcalloc(clk_data->num, sizeof(char *), GFP_KERNEL);
 	if (!clk_data->name) {
+		iounmap(reg_base);
 		kfree(clk_data);
 		return;
 	}