[PATCH -next] phy: sparx5_serdes: Fix return value check in sparx5_serdes_probe()

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From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

In case of error, the function devm_ioremap() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value
check should be replaced with NULL test.

Fixes: 2ff8a1eeb5aa ("phy: Add Sparx5 ethernet serdes PHY driver")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 drivers/phy/microchip/sparx5_serdes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/microchip/sparx5_serdes.c b/drivers/phy/microchip/sparx5_serdes.c
index 06bcf0c166cf..dd854d825000 100644
--- a/drivers/phy/microchip/sparx5_serdes.c
+++ b/drivers/phy/microchip/sparx5_serdes.c
@@ -2438,10 +2438,10 @@ static int sparx5_serdes_probe(struct platform_device *pdev)
 
 	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	iomem = devm_ioremap(priv->dev, iores->start, iores->end - iores->start + 1);
-	if (IS_ERR(iomem)) {
+	if (!iomem) {
 		dev_err(priv->dev, "Unable to get serdes registers: %s\n",
 			iores->name);
-		return PTR_ERR(iomem);
+		return -ENOMEM;
 	}
 	for (idx = 0; idx < ARRAY_SIZE(sparx5_serdes_iomap); idx++) {
 		struct sparx5_serdes_io_resource *iomap = &sparx5_serdes_iomap[idx];




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