IB/rxe: change rxe_set_mtu function type to void

The function rxe_set_mtu always returns zero. So this function type
is changed to void.

CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/sw/rxe/rxe.c

@@ -291,7 +291,7 @@ err1:
 	return err;
 }
 
-int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
+void rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
 {
 	struct rxe_port *port = &rxe->port;
 	enum ib_mtu mtu;
@@ -303,8 +303,6 @@ int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
 
 	port->attr.active_mtu = mtu;
 	port->mtu_cap = ib_mtu_enum_to_int(mtu);
-
-	return 0;
 }
 
 /* called by ifc layer to create new rxe device.
@@ -320,9 +318,7 @@ int rxe_add(struct rxe_dev *rxe, unsigned int mtu)
 	if (err)
 		goto err1;
 
-	err = rxe_set_mtu(rxe, mtu);
-	if (err)
-		goto err1;
+	rxe_set_mtu(rxe, mtu);
 
 	err = rxe_register_device(rxe);
 	if (err)

drivers/infiniband/sw/rxe/rxe.h

@@ -92,7 +92,7 @@ static inline u32 rxe_crc32(struct rxe_dev *rxe,
 	return retval;
 }
 
-int rxe_set_mtu(struct rxe_dev *rxe, unsigned int dev_mtu);
+void rxe_set_mtu(struct rxe_dev *rxe, unsigned int dev_mtu);
 
 int rxe_add(struct rxe_dev *rxe, unsigned int mtu);
 void rxe_remove(struct rxe_dev *rxe);