[PATCH -next] net: ethernet: bgmac: Fix return value check in bgmac_probe()

From: Wei Yongjun <redacted>

In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Signed-off-by: Wei Yongjun <redacted>
---
 drivers/net/ethernet/broadcom/bgmac-platform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bgmac-platform.c b/drivers/net/ethernet/broadcom/bgmac-platform.c
index 7a8f7ef..1a2d841 100644
--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c

@@ -141,7 +141,7 @@ static int bgmac_probe(struct platform_device *pdev)
 	}
 
 	bgmac->plat.idm_base = devm_ioremap_resource(&pdev->dev, regs);
-	if (!bgmac->plat.idm_base) {
+	if (IS_ERR(bgmac->plat.idm_base)) {
 		dev_err(&pdev->dev, "Unable to map idm resource\n");
 		return PTR_ERR(bgmac->plat.idm_base);
 	}