RDMA/irdma: Remove the unnecessary variable saddr

Firstly the variable saddr was to check the type of a network. Now the
variable net_type is used to do the same work. So it is removed.

Link: https://lore.kernel.org/r/20220223024252.3873736-3-yanjun.zhu@linux.devSigned-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/irdma/verbs.c

@@ -4105,7 +4105,6 @@ static int irdma_create_ah(struct ib_ah *ibah,
 	struct irdma_ah_info *ah_info;
 	struct irdma_create_ah_resp uresp;
 	union {
-		struct sockaddr saddr;
 		struct sockaddr_in saddr_in;
 		struct sockaddr_in6 saddr_in6;
 	} sgid_addr, dgid_addr;

drivers/infiniband/hw/irdma/verbs.h

@@ -29,7 +29,6 @@ struct irdma_av {
 	u8 macaddr[16];
 	struct rdma_ah_attr attrs;
 	union {
-		struct sockaddr saddr;
 		struct sockaddr_in saddr_in;
 		struct sockaddr_in6 saddr_in6;
 	} sgid_addr, dgid_addr;