pipeline: rkisp1: Add check for non-existent frame info

Add a check, that makes sure that the given FrameBuffer is associated
to a RkISP1FrameInfo instance. The current code tries to access the
frame info without checking if it actually exists.

Fixes: 0eb65e14e ("libcamera: pipeline: rkisp1: Attach to an IPA")

Signed-off-by: Sebastian Fricke <sebastian.fricke@posteo.net>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/pipeline/rkisp1/rkisp1.cpp

@@ -1080,6 +1080,8 @@ void PipelineHandlerRkISP1::paramReady(FrameBuffer *buffer)
 	RkISP1CameraData *data = cameraData(activeCamera_);
 
 	RkISP1FrameInfo *info = data->frameInfo_.find(buffer);
+	if (!info)
+		return;
 
 	info->paramDequeued = true;
 	tryCompleteRequest(info->request);