encrypted_keys: avoid dumping the master key if the request fails

Do not dump the master key if an error is encountered during the request.

Signed-off-by: Roberto Sassu <[e-mail]>
Acked-by: Gianluca Ramunno <[e-mail]>
Signed-off-by: Mimi Zohar <[e-mail]>

security/keys/encrypted.c

···
 	} else
 		goto out;
 
-	if (IS_ERR(mkey))
+	if (IS_ERR(mkey)) {
 		pr_info("encrypted_key: key %s not found",
 			epayload->master_desc);
-	if (mkey)
-		dump_master_key(*master_key, *master_keylen);
+		goto out;
+	}
+
+	dump_master_key(*master_key, *master_keylen);
 out:
 	return mkey;
 }