net: dsa: mt7530: move SGMII PCS creation to mt7530_probe function

Move creating the SGMII PCS from mt753x_setup() to the more appropriate
mt7530_probe() function.
This is done also in preparation of moving all functions related to
MDIO-connected MT753x switches to a separate module.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/mt7530.c

@@ -3008,12 +3008,6 @@ mt753x_setup(struct dsa_switch *ds)
 	if (ret && priv->irq)
 		mt7530_free_irq_common(priv);
 
-	if (priv->id == ID_MT7531) {
-		ret = mt7531_create_sgmii(priv);
-		if (ret && priv->irq)
-			mt7530_free_irq_common(priv);
-	}
-
 	return ret;
 }
 
@@ -3136,6 +3130,7 @@ mt7530_probe(struct mdio_device *mdiodev)
 	static struct regmap_config *regmap_config;
 	struct mt7530_priv *priv;
 	struct device_node *dn;
+	int ret;
 
 	dn = mdiodev->dev.of_node;
 
@@ -3228,6 +3223,12 @@ mt7530_probe(struct mdio_device *mdiodev)
 	if (IS_ERR(priv->regmap))
 		return PTR_ERR(priv->regmap);
 
+	if (priv->id == ID_MT7531) {
+		ret = mt7531_create_sgmii(priv);
+		if (ret)
+			return ret;
+	}
+
 	return dsa_register_switch(priv->ds);
 }