irqchip/renesas-rzt2h: Use pm_runtime_put_sync() in probe error path

pm_runtime_put() may trigger the idle check after pm_runtime_disable()
is run as part of devm_pm_runtime_enable()'s cleanup action, leaving
runtime PM active.

Use pm_runtime_put_sync() to ensure the idle check runs synchronously.

Fixes: 13e7b33 ("irqchip: Add RZ/{T2H,N2H} Interrupt Controller (ICU) driver")
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260520203117.1516442-2-cosmin-gabriel.tanislav.xa@renesas.com

Author: Demon000

drivers/irqchip/irq-renesas-rzt2h.c

@@ -265,7 +265,7 @@ static int rzt2h_icu_init(struct platform_device *pdev, struct device_node *pare
 	irq_domain = irq_domain_create_hierarchy(parent_domain, 0, RZT2H_ICU_NUM_IRQ,
 						 dev_fwnode(dev), &rzt2h_icu_domain_ops, priv);
 	if (!irq_domain) {
-		pm_runtime_put(dev);
+		pm_runtime_put_sync(dev);
 		return -ENOMEM;
 	}