IB/{core, ipoib}: Simplify ib_find_gid() for unused ndev

ib_find_gid() is only used by IPoIB driver. For IB link layer, GID table
entries are not based on netdevice. Netdevice parameter is unused here.
Therefore, it is removed.
Reviewed-by: NDaniel Jurgens <danielj@mellanox.com>
Reviewed-by: NMark Bloch <markb@mellanox.com>
Signed-off-by: NParav Pandit <parav@mellanox.com>
Signed-off-by: NLeon Romanovsky <leon@kernel.org>
Reviewed-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/core/device.c

@@ -1050,13 +1050,12 @@ EXPORT_SYMBOL(ib_modify_port);
  *   a specified GID value occurs. Its searches only for IB link layer.
  * @device: The device to query.
  * @gid: The GID value to search for.
- * @ndev: The ndev related to the GID to search for.
  * @port_num: The port number of the device where the GID value was found.
  * @index: The index into the GID table where the GID was found.  This
  *   parameter may be NULL.
  */
 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
-		struct net_device *ndev, u8 *port_num, u16 *index)
+		u8 *port_num, u16 *index)
 {
 	union ib_gid tmp_gid;
 	int ret, port, i;

drivers/infiniband/ulp/ipoib/ipoib_ib.c

@@ -1085,7 +1085,7 @@ static bool ipoib_dev_addr_changed_valid(struct ipoib_dev_priv *priv)
 
 	netif_addr_unlock_bh(priv->dev);
 
-	err = ib_find_gid(priv->ca, &search_gid, priv->dev, &port, &index);
+	err = ib_find_gid(priv->ca, &search_gid, &port, &index);
 
 	netif_addr_lock_bh(priv->dev);
 

include/rdma/ib_verbs.h

@@ -2857,7 +2857,7 @@ int ib_modify_port(struct ib_device *device,
 		   struct ib_port_modify *port_modify);
 
 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
-		struct net_device *ndev, u8 *port_num, u16 *index);
+		u8 *port_num, u16 *index);
 
 int ib_find_pkey(struct ib_device *device,
 		 u8 port_num, u16 pkey, u16 *index);