[PATCH] irqchip/starfive: Fix error check for devm_platform_ioremap_resource()

[Chen Ni]

The devm_platform_ioremap_resource() function returns an error pointer
on failure, not NULL. Fix the check to use IS_ERR() and return PTR_ERR()
to correctly handle allocation failures.

Fixes: 2f59ca185497 ("irqchip/starfive: Use devm_ interfaces to simplify resource release")
Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
---
 drivers/irqchip/irq-starfive-jhb100-intc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-starfive-jhb100-intc.c b/drivers/irqchip/irq-starfive-jhb100-intc.c
index 0d5914813afd..838885b02f34 100644
--- a/drivers/irqchip/irq-starfive-jhb100-intc.c
+++ b/drivers/irqchip/irq-starfive-jhb100-intc.c
@@ -208,8 +208,8 @@ static int starfive_intc_probe(struct platform_device *pdev, struct device_node
 		return -ENOMEM;
 
 	irqc->base = devm_platform_ioremap_resource(pdev, 0);
-	if (!irqc->base)
-		return dev_err_probe(&pdev->dev, -ENXIO, "unable to map registers\n");
+	if (IS_ERR(irqc->base))
+		return dev_err_probe(&pdev->dev, PTR_ERR(irqc->base), "unable to map registers\n");
 
 	rst = devm_reset_control_get_optional_exclusive_deasserted(&pdev->dev, NULL);
 	if (IS_ERR(rst))
-- 
2.25.1