staging: rtl8723bs: Remove return statement from void function

Fix the following checkpatch warning:

"WARNING: void function return statements are not generally useful"

Signed-off-by: Leandro Ribeiro <leandrohr@riseup.net>
Link: https://lore.kernel.org/r/20190904210631.13599-1-leandrohr@riseup.net


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