Free psa crypto at the end of programs when initialized

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index 240e7ae..030bc97 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -334,12 +334,12 @@
 #endif
 
     mbedtls_net_free(&server_fd);
-
     mbedtls_x509_crt_free(&cacert);
     mbedtls_ssl_free(&ssl);
     mbedtls_ssl_config_free(&conf);
     mbedtls_ctr_drbg_free(&ctr_drbg);
     mbedtls_entropy_free(&entropy);
+    mbedtls_psa_crypto_free();
 
     /* Shell can not handle large exit numbers -> 1 for errors */
     if (ret < 0) {