RDMA/rxe: Remove the unnecessary variable

The variable pkey is assigned from a macro. Then this variable is passed
to a function bth_init directly, and pkey is not used again. So remove it
and use the macro directly.

Fixes: 76251e15 ("RDMA/rxe: Remove pkey table")
Link: https://lore.kernel.org/r/20211207194057.713289-1-yanjun.zhu@linux.devSigned-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/sw/rxe/rxe_req.c

@@ -369,7 +369,6 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp,
 	int			pad = (-payload) & 0x3;
 	int			paylen;
 	int			solicited;
-	u16			pkey;
 	u32			qp_num;
 	int			ack_req;
 
@@ -401,8 +400,6 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp,
 			(pkt->mask & (RXE_WRITE_MASK | RXE_IMMDT_MASK)) ==
 			(RXE_WRITE_MASK | RXE_IMMDT_MASK));
 
-	pkey = IB_DEFAULT_PKEY_FULL;
-
 	qp_num = (pkt->mask & RXE_DETH_MASK) ? ibwr->wr.ud.remote_qpn :
 					 qp->attr.dest_qp_num;
 
@@ -411,7 +408,7 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp,
 	if (ack_req)
 		qp->req.noack_pkts = 0;
 
-	bth_init(pkt, pkt->opcode, solicited, 0, pad, pkey, qp_num,
+	bth_init(pkt, pkt->opcode, solicited, 0, pad, IB_DEFAULT_PKEY_FULL, qp_num,
 		 ack_req, pkt->psn);
 
 	/* init optional headers */