crypto: qat - remove empty functions and turn qat_uregister fn to void

Some code cleanups after crypto API changes:
- Change qat_algs_unregister to a void function to keep it consistent
with qat_asym_algs_unregister.
- Remove empty functions qat_algs_init & qat_algs_exit.

Signed-off-by: Tadeusz Struk <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/qat/qat_common/adf_common_drv.h

···
 void qat_crypto_put_instance(struct qat_crypto_instance *inst);
 void qat_alg_callback(void *resp);
 void qat_alg_asym_callback(void *resp);
-int qat_algs_init(void);
-void qat_algs_exit(void);
 int qat_algs_register(void);
-int qat_algs_unregister(void);
+void qat_algs_unregister(void);
 int qat_asym_algs_register(void);
 void qat_asym_algs_unregister(void);
 

drivers/crypto/qat/qat_common/adf_ctl_drv.c

···
 {
 	mutex_init(&adf_ctl_lock);
 
-	if (qat_algs_init())
-		goto err_algs_init;
-
 	if (adf_chr_drv_create())
 		goto err_chr_dev;
 
···
 err_aer:
 	adf_chr_drv_destroy();
 err_chr_dev:
-	qat_algs_exit();
-err_algs_init:
 	mutex_destroy(&adf_ctl_lock);
 	return -EFAULT;
 }
···
 	adf_chr_drv_destroy();
 	adf_exit_aer();
 	qat_crypto_unregister();
-	qat_algs_exit();
 	adf_clean_vf_map(false);
 	mutex_destroy(&adf_ctl_lock);
 }

drivers/crypto/qat/qat_common/adf_init.c

···
 	clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
 	clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
 
-	if (!list_empty(&accel_dev->crypto_list) && qat_algs_unregister())
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to unregister crypto algs\n");
-
-	if (!list_empty(&accel_dev->crypto_list))
+	if (!list_empty(&accel_dev->crypto_list)) {
+		qat_algs_unregister();
 		qat_asym_algs_unregister();
+	}
 
 	list_for_each(list_itr, &service_table) {
 		service = list_entry(list_itr, struct service_hndl, list);

drivers/crypto/qat/qat_common/qat_algs.c

···
 	goto unlock;
 }
 
-int qat_algs_unregister(void)
+void qat_algs_unregister(void)
 {
 	mutex_lock(&algs_lock);
 	if (--active_devs != 0)
···
 
 unlock:
 	mutex_unlock(&algs_lock);
-	return 0;
-}
-
-int qat_algs_init(void)
-{
-	return 0;
-}
-
-void qat_algs_exit(void)
-{
 }