staging: media: Fixed else after return or break warning

The following patch fixes the checkpatch.pl warning:

drivers/staging/media/omap4iss/iss_csi2.c:811 warning: else is not generally useful after a break or return

Signed-off-by: Yeliz Taneroglu <yeliztaneroglu@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>