From 68744c4da04b80f7eee061eff6569b9b234869a0 Mon Sep 17 00:00:00 2001
From: Chris Conlon <chris@wolfssl.com>
Date: Wed, 18 Nov 2020 10:25:15 -0700
Subject: [PATCH] return err from fp_invmod_slow() when fp_add() fails

---
 wolfcrypt/src/tfm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/wolfcrypt/src/tfm.c b/wolfcrypt/src/tfm.c
index 9b1a35151..b2040c1d8 100644
--- a/wolfcrypt/src/tfm.c
+++ b/wolfcrypt/src/tfm.c
@@ -1098,7 +1098,7 @@ top:
       #ifdef WOLFSSL_SMALL_STACK
         XFREE(x, NULL, DYNAMIC_TYPE_BIGINT);
       #endif
-        return FP_OKAY;
+        return err;
       }
       err = fp_sub (B, x, B);
       if (err != FP_OKAY) {
@@ -1126,7 +1126,7 @@ top:
       #ifdef WOLFSSL_SMALL_STACK
         XFREE(x, NULL, DYNAMIC_TYPE_BIGINT);
       #endif
-        return FP_OKAY;
+        return err;
       }
       err = fp_sub (D, x, D);
       if (err != FP_OKAY) {