linux-wandboard

staging: iio: generic_buffer: initialize ret

The `ret´ variable is only initialized in the error case. For some reason
it was always != 0 while I played with generic_buffer so here is a patch.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>