dm: add missing unlock on in dm_keyslot_evict()

JIRA: https://issues.redhat.com/browse/RHEL-92762
Upstream Status: kernel/git/torvalds/linux.git

commit 650266a
Author: Dan Carpenter <[email protected]>
Date:   Wed Apr 30 11:05:54 2025 +0300

    dm: add missing unlock on in dm_keyslot_evict()

    We need to call dm_put_live_table() even if dm_get_live_table() returns
    NULL.

    Fixes: 9355a9e ("dm: support key eviction from keyslot managers of underlying devices")
    Cc: [email protected]      # v5.12+
    Signed-off-by: Dan Carpenter <[email protected]>
    Signed-off-by: Mikulas Patocka <[email protected]>

Signed-off-by: Benjamin Marzinski <[email protected]>

Author: bmarzins

drivers/md/dm-table.c

@@ -1178,7 +1178,7 @@ static int dm_keyslot_evict(struct blk_crypto_profile *profile,
 
 	t = dm_get_live_table(md, &srcu_idx);
 	if (!t)
-		return 0;
+		goto put_live_table;
 
 	for (unsigned int i = 0; i < t->num_targets; i++) {
 		struct dm_target *ti = dm_table_get_target(t, i);
@@ -1189,6 +1189,7 @@ static int dm_keyslot_evict(struct blk_crypto_profile *profile,
 					  (void *)key);
 	}
 
+put_live_table:
 	dm_put_live_table(md, srcu_idx);
 	return 0;
 }