irqchip/renesas-rzv2h: Use devm_reset_control_get_exclusive_deasserted()

Use devm_reset_control_get_exclusive_deasserted() to simplify
rzv2h_icu_init().

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/all/20250224131253.134199-6-biju.das.jz@bp.renesas.com

Author: bijudas

drivers/irqchip/irq-renesas-rzv2h.c

@@ -461,13 +461,10 @@ static int rzv2h_icu_init(struct device_node *node, struct device_node *parent)
 		return ret;
 	}
 
-	resetn = devm_reset_control_get_exclusive(&pdev->dev, NULL);
-	if (IS_ERR(resetn))
-		return PTR_ERR(resetn);
-
-	ret = reset_control_deassert(resetn);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to deassert resetn pin, %d\n", ret);
+	resetn = devm_reset_control_get_exclusive_deasserted(&pdev->dev, NULL);
+	if (IS_ERR(resetn)) {
+		ret = PTR_ERR(resetn);
+		dev_err(&pdev->dev, "failed to acquire deasserted reset: %d\n", ret);
 		return ret;
 	}
 
@@ -498,7 +495,6 @@ static int rzv2h_icu_init(struct device_node *node, struct device_node *parent)
 	pm_runtime_put(&pdev->dev);
 pm_disable:
 	pm_runtime_disable(&pdev->dev);
-	reset_control_assert(resetn);
 
 	return ret;
 }