net: dsa: qca8k: fix delay applied to wrong cpu in parse_port_config

Fix delay settings applied to wrong cpu in parse_port_config. The delay
values is set to the wrong index as the cpu_port_index is incremented
too early. Start the cpu_port_index to -1 so the correct value is
applied to address also the case with invalid phy mode and not available
port.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/qca8k.c

@@ -976,7 +976,7 @@ qca8k_setup_of_pws_reg(struct qca8k_priv *priv)
 static int
 qca8k_parse_port_config(struct qca8k_priv *priv)
 {
-	int port, cpu_port_index = 0, ret;
+	int port, cpu_port_index = -1, ret;
 	struct device_node *port_dn;
 	phy_interface_t mode;
 	struct dsa_port *dp;