net: dsa: mt7530: move setting ssc_delta to PHY_INTERFACE_MODE_TRGMII case

Move setting the ssc_delta variable to under the PHY_INTERFACE_MODE_TRGMII
case as it's only needed when trgmii is used.

Fixes: b8f126a ("net-next: dsa: add dsa support for Mediatek MT7530 switch")
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20230320190520.124513-3-arinc.unal@arinc9.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: arinc9

drivers/net/dsa/mt7530.c

@@ -441,6 +441,10 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
 		break;
 	case PHY_INTERFACE_MODE_TRGMII:
 		trgint = 1;
+		if (xtal == HWTRAP_XTAL_25MHZ)
+			ssc_delta = 0x57;
+		else
+			ssc_delta = 0x87;
 		if (priv->id == ID_MT7621) {
 			/* PLL frequency: 150MHz: 1.2GBit */
 			if (xtal == HWTRAP_XTAL_40MHZ)
@@ -460,11 +464,6 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
 		return -EINVAL;
 	}
 
-	if (xtal == HWTRAP_XTAL_25MHZ)
-		ssc_delta = 0x57;
-	else
-		ssc_delta = 0x87;
-
 	mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
 		   P6_INTF_MODE(trgint));