staging: wilc1000: change return type to 'void' for wilc_wfi_deinit_mon_interface()

Use 'void' return type for wilc_wfi_deinit_mon_interface(), as same
value always return.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/linux_mon.c

@@ -253,7 +253,7 @@ struct net_device *wilc_wfi_init_mon_interface(const char *name,
 	return wilc_wfi_mon;
 }
 
-int wilc_wfi_deinit_mon_interface(void)
+void wilc_wfi_deinit_mon_interface(void)
 {
 	bool rollback_lock = false;
 
@@ -270,5 +270,4 @@ int wilc_wfi_deinit_mon_interface(void)
 		}
 		wilc_wfi_mon = NULL;
 	}
-	return 0;
 }

drivers/staging/wilc1000/wilc_wfi_cfgoperations.h

@@ -14,7 +14,7 @@ void wilc_free_wiphy(struct net_device *net);
 void wilc_deinit_host_int(struct net_device *net);
 int wilc_init_host_int(struct net_device *net);
 void wilc_wfi_monitor_rx(u8 *buff, u32 size);
-int wilc_wfi_deinit_mon_interface(void);
+void wilc_wfi_deinit_mon_interface(void);
 struct net_device *wilc_wfi_init_mon_interface(const char *name,
 					       struct net_device *real_dev);
 void wilc_mgmt_frame_register(struct wiphy *wiphy, struct wireless_dev *wdev,