[media] s5p-tv: Simplify the return logic

Make sure pm_runtime_* calls does not use unnecessary
IS_ERR_VALUE().

Reported by scripts/coccinelle/api/pm_runtime.cocci script.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/platform/s5p-tv/hdmi_drv.c

@@ -615,7 +615,7 @@ static int hdmi_s_power(struct v4l2_subdev *sd, int on)
 	else
 		ret = pm_runtime_put_sync(hdev->dev);
 	/* only values < 0 indicate errors */
-	return IS_ERR_VALUE(ret) ? ret : 0;
+	return ret < 0 ? ret : 0;
 }
 
 static int hdmi_s_dv_timings(struct v4l2_subdev *sd,

drivers/media/platform/s5p-tv/sdo_drv.c

@@ -190,7 +190,7 @@ static int sdo_s_power(struct v4l2_subdev *sd, int on)
 		ret = pm_runtime_put_sync(dev);
 
 	/* only values < 0 indicate errors */
-	return IS_ERR_VALUE(ret) ? ret : 0;
+	return ret < 0 ? ret : 0;
 }
 
 static int sdo_streamon(struct sdo_device *sdev)

drivers/media/platform/s5p-tv/sii9234_drv.c

@@ -289,7 +289,7 @@ static int sii9234_s_power(struct v4l2_subdev *sd, int on)
 	else
 		ret = pm_runtime_put(&ctx->client->dev);
 	/* only values < 0 indicate errors */
-	return IS_ERR_VALUE(ret) ? ret : 0;
+	return ret < 0 ? ret : 0;
 }
 
 static int sii9234_s_stream(struct v4l2_subdev *sd, int enable)