[PATCH RESEND] drm/imx: check the value returned by regulator_set_voltage()

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam at nxp.com>

regulator_set_voltage() may fail, so we better check its return value
and propagate it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
---
 drivers/gpu/drm/imx/imx-tve.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index baf7881..c93301c 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -633,7 +633,9 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
 
 	tve->dac_reg = devm_regulator_get(dev, "dac");
 	if (!IS_ERR(tve->dac_reg)) {
-		regulator_set_voltage(tve->dac_reg, 2750000, 2750000);
+		ret = regulator_set_voltage(tve->dac_reg, 2750000, 2750000);
+		if (ret)
+			return ret;
 		ret = regulator_enable(tve->dac_reg);
 		if (ret)
 			return ret;
-- 
1.9.1