Fix checkpatch warning: WARNING: kfree(NULL) is safe this check is probably not required Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: devel@driverdev.osuosl.org Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>