mei: bus: drop useless cldev null check

cldev cannot be NULL when derived with to_mei_cl_device().
Drop useless NULL-checks.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20230522101210.2207395-1-tomas.winkler@intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>