irqchip/renesas-rzg2l: Use devm_reset_control_get_exclusive_deasserted()

Use devm_reset_control_get_exclusive_deasserted() to simplify
rzg2l_irqc_common_init().

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/all/20250212182034.366167-3-fabrizio.castro.jz@renesas.com

drivers/irqchip/irq-renesas-rzg2l.c

@@ -562,14 +562,10 @@ static int rzg2l_irqc_common_init(struct device_node *node, struct device_node *
 		return ret;
 	}
 
-	resetn = devm_reset_control_get_exclusive(dev, NULL);
-	if (IS_ERR(resetn))
+	resetn = devm_reset_control_get_exclusive_deasserted(dev, NULL);
+	if (IS_ERR(resetn)) {
+		dev_err(dev, "failed to acquire deasserted reset: %d\n", ret);
 		return PTR_ERR(resetn);
-
-	ret = reset_control_deassert(resetn);
-	if (ret) {
-		dev_err(dev, "failed to deassert resetn pin, %d\n", ret);
-		return ret;
 	}
 
 	pm_runtime_enable(dev);
@@ -609,7 +605,6 @@ static int rzg2l_irqc_common_init(struct device_node *node, struct device_node *
 	pm_runtime_put(dev);
 pm_disable:
 	pm_runtime_disable(dev);
-	reset_control_assert(resetn);
 	return ret;
 }