[media] V4L: mt9m111: fix missing return value check mt9m111_reg_clear

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
index cbccc869c7e1..8d8420acc9cf 100644
--- a/drivers/media/video/mt9m111.c
+++ b/drivers/media/video/mt9m111.c
@@ -250,7 +250,9 @@ static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
         int ret;
 
         ret = mt9m111_reg_read(client, reg);
-        return mt9m111_reg_write(client, reg, ret & ~data);
+        if (ret >= 0)
+                ret = mt9m111_reg_write(client, reg, ret & ~data);
+        return ret;
 }
 
 static int mt9m111_set_context(struct mt9m111 *mt9m111,