wifi: mwifiex: fix endian conversion

Clearly the value should be converted and then compared,
not the result of the comparison be converted. No binary
changes on x86.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220904212910.a32e45adb2b2.I8c966b07c0bf7be4485967b044d9dad3f4772a27@changeid