media: staging: imx-media-vdic: fix inconsistent IS_ERR and PTR_ERR

Fix inconsistent IS_ERR and PTR_ERR in vdic_get_ipu_resources.
The proper pointer to be passed as argument is ch.

This issue was detected with the help of Coccinelle.

Fixes: 0b2e9e79 ("media: staging/imx: remove confusing IS_ERR_OR_NULL usage")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

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

@@ -177,7 +177,7 @@ static int vdic_get_ipu_resources(struct vdic_priv *priv)
 		priv->vdi_in_ch = ch;
 
 		ch = ipu_idmac_get(priv->ipu, IPUV3_CHANNEL_MEM_VDI_NEXT);
-		if (IS_ERR(priv->vdi_in_ch_n)) {
+		if (IS_ERR(ch)) {
 			err_chan = IPUV3_CHANNEL_MEM_VDI_NEXT;
 			ret = PTR_ERR(ch);
 			goto out_err_chan;