ptp: ocp: fix bug in unregistering the DPLL subsystem

When unregistering the DPLL subsystem the priv pointer is different then
the one used for registration which cause failure in unregistering.

Fixes: 09eeb3aecc6c ("ptp_ocp: implement DPLL ops")
Reviewed-by: Jiri Pirko <[e-mail]>
Reviewed-by: Vadim Fedorenko <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/ptp/ptp_ocp.c

···
 	cancel_delayed_work_sync(&bp->sync_work);
 	for (i = 0; i < OCP_SMA_NUM; i++) {
 		if (bp->sma[i].dpll_pin) {
-			dpll_pin_unregister(bp->dpll, bp->sma[i].dpll_pin, &dpll_pins_ops, bp);
+			dpll_pin_unregister(bp->dpll, bp->sma[i].dpll_pin, &dpll_pins_ops, &bp->sma[i]);
 			dpll_pin_put(bp->sma[i].dpll_pin);
 		}
 	}