Remove redundant ret = 1 in dh_client.c
diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c
index 7ec47ac..3dadf48 100644
--- a/programs/pkey/dh_client.c
+++ b/programs/pkey/dh_client.c
@@ -209,7 +209,6 @@
 
     if( ( n = (size_t) ( end - p ) ) != rsa.len )
     {
-        ret = 1;
         mbedtls_printf( " failed\n  ! Invalid RSA signature size\n\n" );
         goto exit;
     }