staging: rtl8188eu: refactor if else statement

Refactor if else statement to clear checkpatch warnings.
WARNING: else is not generally useful after a break or return
WARNING: line over 80 characters

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>