net: marvell: prestera: add missing unregister_netdev() in prestera_port_create()

If prestera_port_sfp_bind() fails, unregister_netdev() should be called
in error handling path.

Compile tested only.

Fixes: 52323ef7 ("net: marvell: prestera: add phylink support")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/r/1669115432-36841-1-git-send-email-zhangchangzhong@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/prestera/prestera_main.c

@@ -746,6 +746,7 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
 	return 0;
 
 err_sfp_bind:
+	unregister_netdev(dev);
 err_register_netdev:
 	prestera_port_list_del(port);
 err_port_init: