Pair inits with declarations

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/tests/suites/test_suite_x509write.function b/tests/suites/test_suite_x509write.function
index 81f2ee7..61b317c 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -207,19 +207,21 @@
                            int cert_type)
 {
     mbedtls_pk_context key;
+    mbedtls_pk_init(&key);
+
     mbedtls_svc_key_id_t key_id = MBEDTLS_SVC_KEY_ID_INIT;
     psa_algorithm_t md_alg_psa;
+
     mbedtls_x509write_csr req;
+    mbedtls_x509write_csr_init(&req);
+
     unsigned char buf[4096];
     int ret;
     size_t pem_len = 0;
     const char *subject_name = "C=NL,O=PolarSSL,CN=PolarSSL Server 1";
     mbedtls_test_rnd_pseudo_info rnd_info;
-
     memset(&rnd_info, 0x2a, sizeof(mbedtls_test_rnd_pseudo_info));
 
-    mbedtls_x509write_csr_init(&req);
-    mbedtls_pk_init(&key);
 
     USE_PSA_INIT();