libnvdimm/label: Return -ENXIO for no slot in __blk_label_update

Forget to set error code when nd_label_alloc_slot failed, and we
add it to avoid overwritten error code.

Fixes: 0ba1c634892b ("libnvdimm: write blk label set")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201205115056.2076523-1-zhangqilong3@huawei.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index 6f2be7a..9251441 100644 (file)
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -1008,8 +1008,10 @@ static int __blk_label_update(struct nd_region *nd_region,
                if (is_old_resource(res, old_res_list, old_num_resources))
                        continue; /* carry-over */
                slot = nd_label_alloc_slot(ndd);
-               if (slot == UINT_MAX)
+               if (slot == UINT_MAX) {
+                       rc = -ENXIO;
                        goto abort;
+               }
                dev_dbg(ndd->dev, "allocated: %d\n", slot);
 
                nd_label = to_label(ndd, slot);