move entropy init prior arguments number recognition

Signed-off-by: PiotrBzdrega <piotrbzdrega@yandex.com>
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index 8ad2627..eab5c30 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -188,6 +188,7 @@
     mbedtls_mpi_init(&D); mbedtls_mpi_init(&E); mbedtls_mpi_init(&DP);
     mbedtls_mpi_init(&DQ); mbedtls_mpi_init(&QP);
 
+    mbedtls_entropy_init(&entropy);
     mbedtls_pk_init(&key);
     mbedtls_ctr_drbg_init(&ctr_drbg);
     memset(buf, 0, sizeof(buf));
@@ -275,7 +276,6 @@
     mbedtls_printf("\n  . Seeding the random number generator...");
     fflush(stdout);
 
-    mbedtls_entropy_init(&entropy);
 #if !defined(_WIN32) && defined(MBEDTLS_FS_IO)
     if (opt.use_dev_random) {
         if ((ret = mbedtls_entropy_add_source(&entropy, dev_random_entropy_poll,