When ieee80211_check_combinations() refuses a channel,
_ieee80211_link_use_channel() tries to evacuate a NAN channel and then
returns the result of that attempt. Without a NAN interface the attempt
returns -ENOENT, so a refused interface combination reaches userspace as
"No such file or directory" instead of the error of the check.
Keep the error of the combination check when the evacuation does not
help.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Felix Fietkau
610b6b6d15