staging: rtl8723au: Clean up error codes in IO functions

This also fixes up another messy case assuming _FAIL == false and
true == _SUCCESS

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/rtl8723au/core/rtw_io.c
Simple merge

diff --cc drivers/staging/rtl8723au/hal/usb_halinit.c
Simple merge

diff --cc drivers/staging/rtl8723au/hal/usb_ops_linux.c
Simple merge

diff --cc drivers/staging/rtl8723au/include/rtw_io.h
Simple merge

diff --cc drivers/staging/rtl8723au/include/usb_ops_linux.h
Simple merge

diff --cc drivers/staging/rtl8723au/os_dep/usb_ops_linux.c
Simple merge