
The iwl_mvm_remove_sta_key() function handles removing a key when the
sta doesn't exist anymore. Mistakenly, this was changed to return an
error while fixing another bug.
If the mvm_sta doesn't exist, we continue normally, but just don't try
to remove the igtk key.
Fixes: cd4d23c1ea
("iwlwifi: mvm: Fix removal of IGTK")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>