crypto: qat - fix section mismatch warning

Fix Section mismatch warinig in adf_exit_vf_wq()

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>