net: dsa: microchip: remove superfluous num_ports assignment

The variable num_ports is already assigned in the init function. The
drivers individual init function already handles the different purpose
of port_cnt vs port_cnt + 1. This patch removes the extra assignment of
the variable.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/dsa/microchip/ksz8795.c

@@ -993,8 +993,6 @@ static void ksz8795_config_cpu_port(struct dsa_switch *ds)
 	u8 remote;
 	int i;
 
-	ds->num_ports = dev->port_cnt + 1;
-
 	/* Switch marks the maximum frame with extra byte as oversize. */
 	ksz_cfg(dev, REG_SW_CTRL_2, SW_LEGAL_PACKET_DISABLE, true);
 	ksz_cfg(dev, S_TAIL_TAG_CTRL, SW_TAIL_TAG_ENABLE, true);

drivers/net/dsa/microchip/ksz9477.c

@@ -1267,8 +1267,6 @@ static void ksz9477_config_cpu_port(struct dsa_switch *ds)
 	struct ksz_port *p;
 	int i;
 
-	ds->num_ports = dev->port_cnt;
-
 	for (i = 0; i < dev->port_cnt; i++) {
 		if (dsa_is_cpu_port(ds, i) && (dev->cpu_ports & (1 << i))) {
 			phy_interface_t interface;