[PATCH -next] net: axienet: Fix return value check in axienet_probe()

[Wei Yongjun]

From: Wei Yongjun <yongjun_...@trendmicro.com.cn>

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

Fixes: 46aa27df8853 ('net: axienet: Use devm_* calls')
Signed-off-by: Wei Yongjun <yongjun_...@trendmicro.com.cn>
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c 
b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 9c82993..36ee7ab 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1541,9 +1541,9 @@ static int axienet_probe(struct platform_device *pdev)
 
        /* Find the DMA node, map the DMA registers, and decode the DMA IRQs */
        np = of_parse_phandle(pdev->dev.of_node, "axistream-connected", 0);
-       if (IS_ERR(np)) {
+       if (!np) {
                dev_err(&pdev->dev, "could not find DMA node\n");
-               ret = PTR_ERR(np);
+               ret = -ENODEV;
                goto free_netdev;
        }
        ret = of_address_to_resource(np, 0, &dmares);