staging: r8188eu: remove useless if else

Eliminate the follow coccicheck warning:

./drivers/staging/r8188eu/hal/usb_halinit.c:1105:3-5: WARNING: possible
condition with no effect (if == else).

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220211080322.80388-1-jiapeng.chong@linux.alibaba.com


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