[PATCH net] net: axienet: fix a signedness bug in probe

[Dan Carpenter]

The "lp->phy_mode" is an enum but in this context GCC treats it as an
unsigned int so the error handling is never triggered.

Fixes: ee06b1728b95 ("net: axienet: add support for standard phy-mode binding")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c 
b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 4fc627fb4d11..676006f32f91 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1762,7 +1762,7 @@ static int axienet_probe(struct platform_device *pdev)
                }
        } else {
                lp->phy_mode = of_get_phy_mode(pdev->dev.of_node);
-               if (lp->phy_mode < 0) {
+               if ((int)lp->phy_mode < 0) {
                        ret = -EINVAL;
                        goto free_netdev;
                }
-- 
2.20.1