staging: vt6655: Fixed else after return or break warning.

This patch fixes multiple instances of checkpatch.pl
WARNING : else is not generally useful after a break or return in
device_main.c

Signed-off-by: Melike Yurtoglu <aysemelikeyurtoglu@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>