net: phy: xpcs: Return error when 10GKR link errors are found

For 10GKR rate, when link errors are found we need to return fault
status so that XPCS is correctly resumed.
Signed-off-by: NJose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/phy/mdio-xpcs.c

@@ -255,8 +255,10 @@ static int xpcs_read_fault(struct mdio_xpcs_args *xpcs,
 	if (ret < 0)
 		return ret;
 
-	if (ret & MDIO_PCS_10GBRT_STAT2_ERR)
+	if (ret & MDIO_PCS_10GBRT_STAT2_ERR) {
 		xpcs_warn(xpcs, state, "Link has errors!\n");
+		return -EFAULT;
+	}
 
 	return 0;
 }