drm/bridge: tc358767: fix tc_aux_get_status error handling

tc_aux_get_status() does not report AUX_TIMEOUT correctly, as it only
checks the AUX_TIMEOUT if aux is still busy. Fix this by always checking
for AUX_TIMEOUT.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528082747.3631-2-tomi.valkeinen@ti.com

drivers/gpu/drm/bridge/tc358767.c

@@ -286,13 +286,16 @@ static int tc_aux_get_status(struct tc_data *tc, u8 *reply)
 	ret = regmap_read(tc->regmap, DP0_AUXSTATUS, &value);
 	if (ret < 0)
 		return ret;
+
 	if (value & AUX_BUSY) {
+		dev_err(tc->dev, "aux busy!\n");
+		return -EBUSY;
+	}
+
 	if (value & AUX_TIMEOUT) {
-			dev_err(tc->dev, "i2c access timeout!\n");
+		dev_err(tc->dev, "aux access timeout!\n");
 		return -ETIMEDOUT;
 	}
-		return -EBUSY;
-	}
 
 	*reply = (value & AUX_STATUS_MASK) >> AUX_STATUS_SHIFT;
 	return 0;