crypto: qat - disable IOV in adf_dev_stop()

Disabling IOV has the side effect of re-enabling the AEs that might
attempt to do DMAs into the heartbeat buffers.
Move the disable_iov() function in adf_dev_stop() before the AEs are
stopped.

Fixes: ed8ccaef ("crypto: qat - Add support for SRIOV")
Signed-off-by: Michal Witwicki <michal.witwicki@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/intel/qat/qat_common/adf_init.c

@@ -323,6 +323,8 @@ static void adf_dev_stop(struct adf_accel_dev *accel_dev)
 	if (hw_data->stop_timer)
 		hw_data->stop_timer(accel_dev);
 
+	hw_data->disable_iov(accel_dev);
+
 	if (wait)
 		msleep(100);
 
@@ -386,8 +388,6 @@ static void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
 
 	adf_tl_shutdown(accel_dev);
 
-	hw_data->disable_iov(accel_dev);
-
 	if (test_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status)) {
 		hw_data->free_irq(accel_dev);
 		clear_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);