crypto: nx - fix context leak in nx842_crypto_free_ctx

crypto: nx - fix context leak in nx842_crypto_free_ctx

Since the scomp conversion, nx842_crypto_alloc_ctx() allocates the
context separately, but nx842_crypto_free_ctx() never releases it. Add
the missing kfree(ctx) to nx842_crypto_free_ctx(), and reuse
nx842_crypto_free_ctx() in the allocation error path.

Fixes: 980b5705f4e7 ("crypto: nx - Migrate to scomp API")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>