nvme: pass status to nvme_error_status

No need for the full blown request structure.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>

drivers/nvme/host/core.c

@@ -197,9 +197,9 @@ static inline bool nvme_ns_has_pi(struct nvme_ns *ns)
 	return ns->pi_type && ns->ms == sizeof(struct t10_pi_tuple);
 }
 
-static blk_status_t nvme_error_status(struct request *req)
+static blk_status_t nvme_error_status(u16 status)
 {
-	switch (nvme_req(req)->status & 0x7ff) {
+	switch (status & 0x7ff) {
 	case NVME_SC_SUCCESS:
 		return BLK_STS_OK;
 	case NVME_SC_CAP_EXCEEDED:
@@ -262,7 +262,7 @@ static void nvme_retry_req(struct request *req)
 
 void nvme_complete_rq(struct request *req)
 {
-	blk_status_t status = nvme_error_status(req);
+	blk_status_t status = nvme_error_status(nvme_req(req)->status);
 
 	trace_nvme_complete_rq(req);