qlcnic: Fix PVID configuration on eSwitch port.

Clear older PVID before adding a newer PVID to the eSwicth port
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c

@@ -1354,6 +1354,7 @@ int qlcnic_config_switch_port(struct qlcnic_adapter *adapter,
 			arg2 &= ~BIT_3;
 		break;
 	case QLCNIC_ADD_VLAN:
+			arg1 &= ~(0x0ffff << 16);
 			arg1 |= (BIT_2 | BIT_5);
 			arg1 |= (esw_cfg->vlan_id << 16);
 			break;