[PATCH net] net: korina: Fix return value check in korina_probe()

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

Fixes: b4cd249a8cc0 ("net: korina: Use devres functions")
Reported-by: Hulk Robot <redacted>
Signed-off-by: Wei Yongjun <redacted>
---
 drivers/net/ethernet/korina.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c
index 6f987a7ffcb3..b30a45725374 100644
--- a/drivers/net/ethernet/korina.c
+++ b/drivers/net/ethernet/korina.c

@@ -1315,23 +1315,23 @@ static int korina_probe(struct platform_device *pdev)
 	lp->tx_irq = platform_get_irq_byname(pdev, "tx");
 
 	p = devm_platform_ioremap_resource_byname(pdev, "emac");
-	if (!p) {
+	if (IS_ERR(p)) {
 		printk(KERN_ERR DRV_NAME ": cannot remap registers\n");
-		return -ENOMEM;
+		return PTR_ERR(p);
 	}
 	lp->eth_regs = p;
 
 	p = devm_platform_ioremap_resource_byname(pdev, "dma_rx");
-	if (!p) {
+	if (IS_ERR(p)) {
 		printk(KERN_ERR DRV_NAME ": cannot remap Rx DMA registers\n");
-		return -ENOMEM;
+		return PTR_ERR(p);
 	}
 	lp->rx_dma_regs = p;
 
 	p = devm_platform_ioremap_resource_byname(pdev, "dma_tx");
-	if (!p) {
+	if (IS_ERR(p)) {
 		printk(KERN_ERR DRV_NAME ": cannot remap Tx DMA registers\n");
-		return -ENOMEM;
+		return PTR_ERR(p);
 	}
 	lp->tx_dma_regs = p;
 

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Thu, 13 May 2021 12:46:21 +0000 you wrote:

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

Fixes: b4cd249a8cc0 ("net: korina: Use devres functions")
Reported-by: Hulk Robot <redacted>
Signed-off-by: Wei Yongjun <redacted>

[...]

Here is the summary with links:
  - [net] net: korina: Fix return value check in korina_probe()
    https://git.kernel.org/netdev/net/c/c7d8302478ae

You are awesome, thank you!
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