net: phy: Fix return value check phy_probe

Don't ignore return value of phy_probe() call as
the probe may fail and it needs to be reported.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 04af916..c1c1af9 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -671,7 +671,10 @@
 
 	dev->drv = get_phy_driver(dev, interface);
 
-	phy_probe(dev);
+	if (phy_probe(dev)) {
+		printf("%s, PHY probe failed\n", __func__);
+		return NULL;
+	}
 
 	if (addr >= 0 && addr < PHY_MAX_ADDR)
 		bus->phymap[addr] = dev;