Add initialization for structures

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index ae966a2..59812b4 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -57,6 +57,9 @@
     mbedtls_ecp_restart_ctx restart_ctx;
 #endif /* MBEDTLS_ECP_RESTARTABLE */
 
+    mbedtls_ecp_group_init( &grp );
+    mbedtls_ecp_point_init( &P );
+
     TEST_INVALID_PARAM( mbedtls_ecp_point_init( NULL ) );
     TEST_INVALID_PARAM( mbedtls_ecp_keypair_init( NULL ) );
     TEST_INVALID_PARAM( mbedtls_ecp_group_init( NULL ) );