ref leak in request_asymmetric_key ?

[Billie Alsup (balsup)]

In security/integrity/digsig_asymmetric.c function request_asymmetric_key, 
should we not do a key_ref_put() when the key is found in the 
ima_blacklist_keyring? I'm working with 6.6.9 kernel but have verified it is 
the same logic in linux-stable master branch (top of tree is 
ecb1b8288dc7ccbdcb3b9df005fa1c0e0c0388a7)
 
I'm new to this area of code however, so I may misunderstand it.  This is what 
I'm thinking is needed.  

diff --git a/security/integrity/digsig_asymmetric.c 
b/security/integrity/digsig_asymmetric.c
index 895f4b9ce8c6..b969cd56e9ef 100644
--- a/security/integrity/digsig_asymmetric.c
+++ b/security/integrity/digsig_asymmetric.c
@@ -35,6 +35,7 @@ static struct key *request_asymmetric_key(struct key 
*keyring, uint32_t keyid)
                kref = keyring_search(make_key_ref(key, 1),
                                      &key_type_asymmetric, name, true);
                if (!IS_ERR(kref)) {
+                       key_ref_put(kref);
                        pr_err("Key '%s' is in ima_blacklist_keyring\n", name);
                        return ERR_PTR(-EKEYREJECTED);
                }