linux-wandboard

iwlagn: remove hw_ready variable

This variable is only ever checked right after
the function that sets it, but the same function
will also return the status, so we can pass it
through instead of checking hw_ready later.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>