ssl: fix possible ref counting fields use before init.

ssl:  fix possible ref counting fields use before init.

`strdup(propq)` failure is doing a `goto err;` from where `SSL_CTX_free` is called.
The possible call is made before reference and lock fields setup.

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/15052)