media: i2c: imx214: Drop check for reentrant .s_stream()

The subdev .s_stream() operation shall not be called to start streaming
on an already started subdev, or stop streaming on a stopped subdev.
Remove the check that guards against that condition.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/i2c/imx214.c

@@ -775,9 +775,6 @@ static int imx214_s_stream(struct v4l2_subdev *subdev, int enable)
 	struct imx214 *imx214 = to_imx214(subdev);
 	int ret;
 
-	if (imx214->streaming == enable)
-		return 0;
-
 	if (enable) {
 		ret = pm_runtime_resume_and_get(imx214->dev);
 		if (ret < 0)