[media] bdisp: fix debug info memory access

bdisp_dev->dbg.copy_node shall be a copy of (and not point to)
bdisp_ctx->node, since this resource is freed upon driver release.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/sti/bdisp/bdisp-hw.c

@@ -768,12 +768,12 @@ static void bdisp_hw_save_request(struct bdisp_ctx *ctx)
 		/* Allocate memory if not done yet */
 		if (!copy_node[i]) {
 			copy_node[i] = devm_kzalloc(ctx->bdisp_dev->dev,
-						    sizeof(*copy_node),
+						    sizeof(*copy_node[i]),
 						    GFP_KERNEL);
 			if (!copy_node[i])
 				return;
 		}
-		copy_node[i] = node[i];
+		*copy_node[i] = *node[i];
 	}
 }