firmware: imx: scu-irq: Set mu_resource_id before get handle

mu_resource_id is referenced in imx_scu_irq_get_status() and
imx_scu_irq_group_enable() which could be used by other modules, so
need to set correct value before using imx_sc_irq_ipc_handle in
SCU API call.

Reviewed-by: Frank Li <[e-mail]>
Signed-off-by: Peng Fan <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

drivers/firmware/imx/imx-scu-irq.c

···
 	struct mbox_chan *ch;
 	int ret = 0, i = 0;
 
+	if (!of_parse_phandle_with_args(dev->of_node, "mboxes",
+				       "#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)
+		i = 1;
+
+	mu_resource_id = IMX_SC_R_MU_0A + i;
+
 	ret = imx_scu_get_handle(&imx_sc_irq_ipc_handle);
 	if (ret)
 		return ret;
···
 		dev_err(dev, "failed to request mbox chan gip3, ret %d\n", ret);
 		goto free_cl;
 	}
-
-	if (!of_parse_phandle_with_args(dev->of_node, "mboxes",
-				       "#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)
-		i = 1;
-
-	mu_resource_id = IMX_SC_R_MU_0A + i;
 
 	/* Create directory under /sysfs/firmware */
 	wakeup_obj = kobject_create_and_add("scu_wakeup_source", firmware_kobj);