staging: rtl8192e: remove return statement from void function

Remove unnecessary return statement from the void function
rtl92e_config_mac(). Issue found by checkpatch.

WARNING: void function return statements are not generally useful

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20230619150953.22484-4-straube.linux@gmail.com


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