1 files changed, 2 insertions, 4 deletions

diff --git a/lib/mpi/mpi-pow.c b/lib/mpi/mpi-pow.c
index 82b19e4f1189..2fd7a46d55ec 100644
--- a/lib/mpi/mpi-pow.c
+++ b/lib/mpi/mpi-pow.c
@@ -24,6 +24,7 @@
 int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
 {
         mpi_ptr_t mp_marker = NULL, bp_marker = NULL, ep_marker = NULL;
+        struct karatsuba_ctx karactx = {};
         mpi_ptr_t xp_marker = NULL;
         mpi_ptr_t tspace = NULL;
         mpi_ptr_t rp, ep, mp, bp;
@@ -150,13 +151,11 @@ int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
                 int c;
                 mpi_limb_t e;
                 mpi_limb_t carry_limb;
-                struct karatsuba_ctx karactx;
 
                 xp = xp_marker = mpi_alloc_limb_space(2 * (msize + 1));
                 if (!xp)
                         goto enomem;
 
-                memset(&karactx, 0, sizeof karactx);
                 negative_result = (ep[0] & 1) && base->sign;
 
                 i = esize - 1;
@@ -281,8 +280,6 @@ int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
                 if (mod_shift_cnt)
                         mpihelp_rshift(rp, rp, rsize, mod_shift_cnt);
                 MPN_NORMALIZE(rp, rsize);
-
-                mpihelp_release_karatsuba_ctx(&karactx);
         }
 
         if (negative_result && rsize) {
@@ -299,6 +296,7 @@ int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
 leave:
         rc = 0;
 enomem:
+        mpihelp_release_karatsuba_ctx(&karactx);
         if (assign_rp)
                 mpi_assign_limb_space(res, rp, size);
         if (mp_marker)