In preparation to make intel_lr_context_pin|unpin to accept
requests, assign ringbuf into request before we call the pinning.
v2: No need to unset ringbuf on error path (Chris)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
 {
        int ret;
 
+       request->ringbuf = request->ctx->engine[request->ring->id].ringbuf;
+
        if (request->ctx != request->ring->default_context) {
                ret = intel_lr_context_pin(request->ring, request->ctx);
                if (ret)
                        return ret;
        }
 
-       request->ringbuf = request->ctx->engine[request->ring->id].ringbuf;
-
        return 0;
 }