tipc: remove unnecessary break after return

Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/tipc/socket.c

@@ -2028,7 +2028,6 @@ int tipc_ioctl(struct socket *sk, unsigned int cmd, unsigned long arg)
 			return 0;
 		}
 		return -EADDRNOTAVAIL;
-		break;
 	default:
 		return -ENOIOCTLCMD;
 	}