[PATCH] spi: sprd-adi: checking for NULL instead of IS_ERR()

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

devm_ioremap_resource() returns error pointers, it never returns NULL.

Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c
index 0d481f8a46c2..bff6ef1caad7 100644
--- a/drivers/spi/spi-sprd-adi.c
+++ b/drivers/spi/spi-sprd-adi.c
@@ -341,8 +341,8 @@ static int sprd_adi_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	sadi->base = devm_ioremap_resource(&pdev->dev, res);
-	if (!sadi->base) {
-		ret = -ENOMEM;
+	if (IS_ERR(sadi->base)) {
+		ret = PTR_ERR(sadi->base);
 		goto put_ctlr;
 	}
 
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