[PATCH -next] scsi: hisi_sas: fix a typo in hisi_sas_task_prep()

[Wei Yongjun]

Fix a typo in hisi_sas_task_prep().

Fixes: 7eee4b921822 ("scsi: hisi_sas: relocate smp sg map")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/scsi/hisi_sas/hisi_sas_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c 
b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 39f694e..6d37965 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -390,7 +390,7 @@ static int hisi_sas_task_prep(struct sas_task *task,
                        }
                        n_elem_resp = dma_map_sg(dev, &task->smp_task.smp_resp,
                                                 1, DMA_FROM_DEVICE);
-                       if (!n_elem_req) {
+                       if (!n_elem_resp) {
                                rc = -ENOMEM;
                                goto err_out_dma_unmap;
                        }