net: dsa: felix: propagate the error code from phy_startup()

Make sure that the link status returned by phy_startup() is propagated
to the .start() method of struct eth_ops.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Tested-by: Michael Walle <michael@walle.cc>
diff --git a/drivers/net/mscc_eswitch/felix_switch.c b/drivers/net/mscc_eswitch/felix_switch.c
index c8ecf4f..6aa7978 100644
--- a/drivers/net/mscc_eswitch/felix_switch.c
+++ b/drivers/net/mscc_eswitch/felix_switch.c
@@ -352,9 +352,7 @@
 		 FELIX_QSYS_SYSTEM_SW_PORT_LOSSY |
 		 FELIX_QSYS_SYSTEM_SW_PORT_SCH(1));
 
-	phy_startup(phy);
-
-	return 0;
+	return phy_startup(phy);
 }
 
 static void felix_port_disable(struct udevice *dev, int pidx,