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

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: 13e7b3305b64 ("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