RDMA/hfi1: Remove redundant assignment to pointer ppd

Pointer ppd is being assigned a value in a for-loop however it
is never read. The assignment is redundant and can be removed.
Cleans up clang scan build warning:

drivers/infiniband/hw/hfi1/init.c:1030:3: warning: Value stored
to 'ppd' is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20231023141733.667807-1-colin.i.king@gmail.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

Author: ColinIanKing

drivers/infiniband/hw/hfi1/init.c

@@ -1027,7 +1027,6 @@ static void shutdown_device(struct hfi1_devdata *dd)
 	msix_clean_up_interrupts(dd);
 
 	for (pidx = 0; pidx < dd->num_pports; ++pidx) {
-		ppd = dd->pport + pidx;
 		for (i = 0; i < dd->num_rcv_contexts; i++) {
 			rcd = hfi1_rcd_get_by_index(dd, i);
 			hfi1_rcvctrl(dd, HFI1_RCVCTRL_TAILUPD_DIS |