media: staging: media: imx: change imx_media_fim_set_stream() to return void

At present, the function imx_media_fim_set_stream() always returns 0.
So, convert it to be a function returning void instead. Issue identified
using the returnvar.cocci Coccinelle semantic patch.
Signed-off-by: Deepak R Varma <drv@mailo.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/imx/imx-media-csi.c

@@ -779,11 +779,8 @@ static int csi_start(struct csi_priv *priv)
 		goto idmac_stop;
 
 	/* start the frame interval monitor */
-	if (priv->fim && priv->dest == IPU_CSI_DEST_IDMAC) {
-		ret = imx_media_fim_set_stream(priv->fim, output_fi, true);
-		if (ret)
-			goto idmac_stop;
-	}
+	if (priv->fim && priv->dest == IPU_CSI_DEST_IDMAC)
+		imx_media_fim_set_stream(priv->fim, output_fi, true);
 
 	ret = ipu_csi_enable(priv->csi);
 	if (ret) {

drivers/staging/media/imx/imx-media-fim.c

@@ -368,12 +368,11 @@ void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp)
 }
 
 /* Called by the subdev in its s_stream callback */
-int imx_media_fim_set_stream(struct imx_media_fim *fim,
-			     const struct v4l2_fract *fi,
-			     bool on)
+void imx_media_fim_set_stream(struct imx_media_fim *fim,
+			      const struct v4l2_fract *fi,
+			      bool on)
 {
 	unsigned long flags;
-	int ret = 0;
 
 	v4l2_ctrl_lock(fim->ctrl[FIM_CL_ENABLE]);
 
@@ -393,7 +392,6 @@ int imx_media_fim_set_stream(struct imx_media_fim *fim,
 	fim->stream_on = on;
 out:
 	v4l2_ctrl_unlock(fim->ctrl[FIM_CL_ENABLE]);
-	return ret;
 }
 
 int imx_media_fim_add_controls(struct imx_media_fim *fim)

drivers/staging/media/imx/imx-media.h

@@ -246,9 +246,9 @@ int imx_media_dev_notifier_register(struct imx_media_dev *imxmd,
 /* imx-media-fim.c */
 struct imx_media_fim;
 void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp);
-int imx_media_fim_set_stream(struct imx_media_fim *fim,
-			     const struct v4l2_fract *frame_interval,
-			     bool on);
+void imx_media_fim_set_stream(struct imx_media_fim *fim,
+			      const struct v4l2_fract *frame_interval,
+			      bool on);
 int imx_media_fim_add_controls(struct imx_media_fim *fim);
 struct imx_media_fim *imx_media_fim_init(struct v4l2_subdev *sd);
 void imx_media_fim_free(struct imx_media_fim *fim);