crypto: cavium/zip - Add missing single_release()

commit c552ffb5c93d9d65aaf34f5f001c4e7e8484ced1 upstream.

When using single_open() for opening, single_release() should be
used instead of seq_release(), otherwise there is a memory leak.

Fixes: 09ae5d37 ("crypto: zip - Add Compression/Decompression statistics")
Cc: <stable@vger.kernel.org>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>