diff --git a/drivers/firmware/imx/imx-scu-irq.c b/drivers/firmware/imx/imx-scu-irq.c
index 6125cccc9ba7..f2b902e95b73 100644
--- a/drivers/firmware/imx/imx-scu-irq.c
+++ b/drivers/firmware/imx/imx-scu-irq.c
@@ -226,8 +226,10 @@ int imx_scu_enable_general_irq_channel(struct device *dev)
 	INIT_WORK(&imx_sc_irq_work, imx_scu_irq_work_handler);
 
 	if (!of_parse_phandle_with_args(dev->of_node, "mboxes",
-				       "#mbox-cells", 0, &spec))
+				       "#mbox-cells", 0, &spec)) {
 		i = of_alias_get_id(spec.np, "mu");
+		of_node_put(spec.np);
+	}
 
 	/* use mu1 as general mu irq channel if failed */
 	if (i < 0)