dm table: rework reference counting fix

Fix an error introduced in dm-table-rework-reference-counting.patch.

When there is failure after table initialization, we need to use
dm_table_destroy, not dm_table_put, to free the table.

dm_table_put may be used only after dm_table_get.

Cc: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Reviewed-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 977f36612e83..f01096549a93 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1064,7 +1064,7 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
 
         r = populate_table(t, param, param_size);
         if (r) {
-                dm_table_put(t);
+                dm_table_destroy(t);
                 goto out;
         }
 
@@ -1072,7 +1072,7 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
         hc = dm_get_mdptr(md);
         if (!hc || hc->md != md) {
                 DMWARN("device has been removed from the dev hash table.");
-                dm_table_put(t);
+                dm_table_destroy(t);
                 up_write(&_hash_lock);
                 r = -ENXIO;
                 goto out;