net: fsl_pq_mdio: fix non tbi phy access

Since 952c5ca1 (fsl_pq_mdio: Clean up tbi address configuration) .probe returns
-EBUSY when the "tbi-phy" node is missing. Fix this.

Cc: Andy Fleming <afleming@freescale.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/fsl_pq_mdio.c

@@ -356,15 +356,15 @@ static int fsl_pq_mdio_probe(struct platform_device *ofdev)
 
 		if (prop)
 			tbiaddr = *prop;
-	}
 
 		if (tbiaddr == -1) {
 			err = -EBUSY;
 
 			goto err_free_irqs;
-	}
-
+		} else {
 			out_be32(tbipa, tbiaddr);
+		}
+	}
 
 	err = of_mdiobus_register(new_bus, np);
 	if (err) {