nvme: skip trace completion for host path errors

The command was never dispatched for the driver's "host path error", so
the command was never actually initialized and there's no corresponding
submit trace for the completion.

Reported-by: Minsik Jeon <hmi.jeon@samsung.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>

Author: keithbusch

drivers/nvme/host/core.c

@@ -454,11 +454,10 @@ void nvme_end_req(struct request *req)
 	blk_mq_end_request(req, status);
 }
 
-void nvme_complete_rq(struct request *req)
+static void __nvme_complete_rq(struct request *req)
 {
 	struct nvme_ctrl *ctrl = nvme_req(req)->ctrl;
 
-	trace_nvme_complete_rq(req);
 	nvme_cleanup_cmd(req);
 
 	/*
@@ -493,6 +492,12 @@ void nvme_complete_rq(struct request *req)
 		return;
 	}
 }
+
+void nvme_complete_rq(struct request *req)
+{
+	trace_nvme_complete_rq(req);
+	__nvme_complete_rq(req);
+}
 EXPORT_SYMBOL_GPL(nvme_complete_rq);
 
 void nvme_complete_batch_req(struct request *req)
@@ -513,7 +518,7 @@ blk_status_t nvme_host_path_error(struct request *req)
 {
 	nvme_req(req)->status = NVME_SC_HOST_PATH_ERROR;
 	blk_mq_set_request_complete(req);
-	nvme_complete_rq(req);
+	__nvme_complete_rq(req);
 	return BLK_STS_OK;
 }
 EXPORT_SYMBOL_GPL(nvme_host_path_error);