[PATCH 2/2] irqchip/ls-extirq: fix devm_of_iomap() error check

[Ioana Ciornei]

The devm_of_iomap() function returns an ERR_PTR() encoded error code on
failure. Replace the incorrect check against NULL with IS_ERR().

Fixes: 05cd654829dd ("irqchip/ls-extirq: Convert to a platform driver to make it work again")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Closes: https://lore.kernel.org/all/aYXvfbfT6w0TMsXS@stanley.mountain/
Signed-off-by: Ioana Ciornei <ioana.ciornei@xxxxxxx>
---
 drivers/irqchip/irq-ls-extirq.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-ls-extirq.c b/drivers/irqchip/irq-ls-extirq.c
index 96f9c20621cf..519a9d89f7f6 100644
--- a/drivers/irqchip/irq-ls-extirq.c
+++ b/drivers/irqchip/irq-ls-extirq.c
@@ -190,8 +190,9 @@ static int ls_extirq_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, -ENOMEM, "Failed to allocate memory\n");
 
 	priv->intpcr = devm_of_iomap(dev, node, 0, NULL);
-	if (!priv->intpcr)
-		return dev_err_probe(dev, -ENOMEM, "Cannot ioremap OF node %pOF\n", node);
+	if (IS_ERR(priv->intpcr))
+		return dev_err_probe(dev, PTR_ERR(priv->intpcr),
+				     "Cannot ioremap OF node %pOF\n", node);
 
 	ret = ls_extirq_parse_map(priv, node);
 	if (ret)
-- 
2.25.1