dcb: fix return type on dcb_setapp()

Incorrect return type on dcb_setapp() this routine
returns negative error codes. All call sites of
dcb_setapp() assign the return value to an int already
so no need to update drivers.
Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/dcbnl.h

@@ -28,7 +28,7 @@ struct dcb_app_type {
 	struct list_head  list;
 };
 
-u8 dcb_setapp(struct net_device *, struct dcb_app *);
+int dcb_setapp(struct net_device *, struct dcb_app *);
 u8 dcb_getapp(struct net_device *, struct dcb_app *);
 int dcb_ieee_setapp(struct net_device *, struct dcb_app *);
 int dcb_ieee_delapp(struct net_device *, struct dcb_app *);

net/dcb/dcbnl.c

@@ -1885,7 +1885,7 @@ EXPORT_SYMBOL(dcb_getapp);
  * removes applications from the app list if the priority is
  * set to zero.
  */
-u8 dcb_setapp(struct net_device *dev, struct dcb_app *new)
+int dcb_setapp(struct net_device *dev, struct dcb_app *new)
 {
 	struct dcb_app_type *itr;
 	struct dcb_app_type event;