Inverted condition caused wrong value for eht_oper_centr_freq_seg0_idx get selected in ETH320 mode, causing AP fail to start. Signed-off-by: Mantas Pucka <mantas@8devices.com> Link: https://github.com/openwrt/openwrt/pull/18998 Signed-off-by: Robert Marko <robimarko@gmail.com>