[PATCH V2] nvme/core:disable streams when get stream params failed

[Wu Bo]

After enable nvme streams, then if get stream params failed, 
We should disable streams before return error in 
nvme_configure_directives() function.

Signed-off-by: Wu Bo <wub...@huawei.com>
---
 drivers/nvme/host/core.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index f3c037f..298e60c 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -552,20 +552,24 @@ static int nvme_configure_directives(struct nvme_ctrl 
*ctrl)
                return ret;
 
        ret = nvme_get_stream_params(ctrl, &s, NVME_NSID_ALL);
-       if (ret)
-               return ret;
+       if (ret) {
+               goto out_disable_stream;
+       }
 
        ctrl->nssa = le16_to_cpu(s.nssa);
        if (ctrl->nssa < BLK_MAX_WRITE_HINTS - 1) {
                dev_info(ctrl->device, "too few streams (%u) available\n",
                                        ctrl->nssa);
-               nvme_disable_streams(ctrl);
-               return 0;
+               goto out_disable_stream;
        }
 
        ctrl->nr_streams = min_t(unsigned, ctrl->nssa, BLK_MAX_WRITE_HINTS - 1);
        dev_info(ctrl->device, "Using %u streams\n", ctrl->nr_streams);
        return 0;
+
+out_disable_stream:
+       nvme_disable_streams(ctrl);
+       return ret;
 }
 
 /*
-- 
1.8.3.1