irqchip/aspeed-scu-ic: Fix irq_of_parse_and_map() return value

[ Upstream commit f03a967 ]

The irq_of_parse_and_map() returns 0 on failure, not a negative ERRNO.

Fixes: 04f6059 ("irqchip: Add Aspeed SCU interrupt controller")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220423094227.33148-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/irqchip/irq-aspeed-scu-ic.c

@@ -159,8 +159,8 @@ static int aspeed_scu_ic_of_init_common(struct aspeed_scu_ic *scu_ic,
 	}
 
 	irq = irq_of_parse_and_map(node, 0);
-	if (irq < 0) {
-		rc = irq;
+	if (!irq) {
+		rc = -EINVAL;
 		goto err;
 	}