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 8726dec..81816fe 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -287,18 +287,20 @@
                            int cert_type)
 {
     mbedtls_pk_context key;
+    mbedtls_pk_init(&key);
+
     mbedtls_svc_key_id_t key_id = MBEDTLS_SVC_KEY_ID_INIT;
     psa_key_attributes_t key_attr = PSA_KEY_ATTRIBUTES_INIT;
+
     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;
 
-    mbedtls_x509write_csr_init(&req);
-    mbedtls_pk_init(&key);
-
     MD_OR_USE_PSA_INIT();
 
     memset(&rnd_info, 0x2a, sizeof(mbedtls_test_rnd_pseudo_info));