From 272cc9c8b5d0dffe9fb03e6c0ab3da2fde9c20e9 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Fri, 14 Dec 2012 07:48:00 +0000
Subject: [PATCH] iio: dac: ad5380: Don't set error code to st->vref

regulator_get_voltage() may return negative error code.
Add error checking to avoid setting error code to st->vref_uv.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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