[PATCH 05/10] nvdimm/btt: use goto error labels on btt_blk_init()

[Luis Chamberlain <mcgrof@xxxxxxxxxx>]

This will make it easier to share common error paths.

Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
 drivers/nvdimm/btt.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 3fd1bdb9fc05..275704d80109 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1520,10 +1520,11 @@ static int btt_blk_init(struct btt *btt)
 {
        struct nd_btt *nd_btt = btt->nd_btt;
        struct nd_namespace_common *ndns = nd_btt->ndns;
+       int rc = -ENOMEM;
 
        btt->btt_disk = blk_alloc_disk(NUMA_NO_NODE);
        if (!btt->btt_disk)
-               return -ENOMEM;
+               goto out;
 
        nvdimm_namespace_disk_name(ndns, btt->btt_disk->disk_name);
        btt->btt_disk->first_minor = 0;
@@ -1535,19 +1536,23 @@ static int btt_blk_init(struct btt *btt)
        blk_queue_flag_set(QUEUE_FLAG_NONROT, btt->btt_disk->queue);
 
        if (btt_meta_size(btt)) {
-               int rc = nd_integrity_init(btt->btt_disk, btt_meta_size(btt));
-
-               if (rc) {
-                       blk_cleanup_disk(btt->btt_disk);
-                       return rc;
-               }
+               rc = nd_integrity_init(btt->btt_disk, btt_meta_size(btt));
+               if (rc)
+                       goto out_cleanup_disk;
        }
+
        set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9);
        device_add_disk(&btt->nd_btt->dev, btt->btt_disk, NULL);
+
        btt->nd_btt->size = btt->nlba * (u64)btt->sector_size;
        nvdimm_check_and_set_ro(btt->btt_disk);
 
        return 0;
+
+out_cleanup_disk:
+       blk_cleanup_disk(btt->btt_disk);
+out:
+       return rc;
 }
 
 static void btt_blk_cleanup(struct btt *btt)
-- 
2.30.2