Only unlock in rsa_get_blinding when locking was successful

CLA: trivial

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Paul Dale <ppzgs1@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/28438)

diff --git a/crypto/rsa/rsa_ossl.c b/crypto/rsa/rsa_ossl.c
index 4165562757cb9514de662119b59c44b8236e4487..1e56c6d38c61feec34a8d40bff8457cabe728043 100644 (file)
--- a/crypto/rsa/rsa_ossl.c
+++ b/crypto/rsa/rsa_ossl.c
@@ -264,8 +264,8 @@ static BN_BLINDING *rsa_get_blinding(RSA *rsa, BN_CTX *ctx)
                 BN_BLINDING_free(ret);
                 ret = NULL;
             }
+            CRYPTO_THREAD_unlock(rsa->lock);
         }
-        CRYPTO_THREAD_unlock(rsa->lock);
     }
 
     return ret;