staging: rtl8821ae: Fixes unnecessary return warning.

This patch fixes "void function return statements are not generally
useful" checkpatch.pl warning in base.c

Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>