irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain_probe

irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain_probe

[ Upstream commit 02298b7bae12936ca313975b02e7f98b06670d37 ]

of_irq_find_parent() returns a node pointer with refcount incremented,
We should use of_node_put() on it when not needed anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: 8d7e9a84e516 ("irqchip/ti-sci-intr: Add support for Interrupt Router driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230102085611.3955984-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>