vdpa: remove unused variables 'ifcvf' and 'ifcvf_lm'

drivers/vdpa/ifcvf/ifcvf_main.c:34:24:
 warning: variable ‘ifcvf’ set but not used [-Wunused-but-set-variable]
drivers/vdpa/ifcvf/ifcvf_base.c:304:31:
 warning: variable ‘ifcvf_lm’ set but not used [-Wunused-but-set-variable]
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200402024626.32944-1-yuehaibing@huawei.comSigned-off-by: Michael S. Tsirkin <mst@redhat.com>

drivers/vdpa/ifcvf/ifcvf_base.c

@@ -301,12 +301,10 @@ int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u64 num)
 
 static int ifcvf_hw_enable(struct ifcvf_hw *hw)
 {
-	struct ifcvf_lm_cfg __iomem *ifcvf_lm;
 	struct virtio_pci_common_cfg __iomem *cfg;
 	struct ifcvf_adapter *ifcvf;
 	u32 i;
 
-	ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;
 	ifcvf = vf_to_adapter(hw);
 	cfg = hw->common_cfg;
 	ifc_iowrite16(IFCVF_MSI_CONFIG_OFF, &cfg->msix_config);

drivers/vdpa/ifcvf/ifcvf_main.c

@@ -31,11 +31,9 @@ static irqreturn_t ifcvf_intr_handler(int irq, void *arg)
 static int ifcvf_start_datapath(void *private)
 {
 	struct ifcvf_hw *vf = ifcvf_private_to_vf(private);
-	struct ifcvf_adapter *ifcvf;
 	u8 status;
 	int ret;
 
-	ifcvf = vf_to_adapter(vf);
 	vf->nr_vring = IFCVF_MAX_QUEUE_PAIRS * 2;
 	ret = ifcvf_start_hw(vf);
 	if (ret < 0) {