i40e: Fix mismatching type for ioremap_len

As pointed out by Ben Hutchings, ioremap uses unsigned long as
its parameter type, so we should be using that instead of u32
or int.
Reported-by: NBen Hutchings <ben@decadent.org.uk>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -9456,10 +9456,10 @@ static void i40e_print_features(struct i40e_pf *pf)
 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	struct i40e_aq_get_phy_abilities_resp abilities;
+	unsigned long ioremap_len;
 	struct i40e_pf *pf;
 	struct i40e_hw *hw;
 	static u16 pfs_found;
-	u32 ioremap_len;
 	u16 link_status;
 	int err = 0;
 	u32 len;
@@ -9509,7 +9509,7 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	hw = &pf->hw;
 	hw->back = pf;
 
-	ioremap_len = min_t(int, pci_resource_len(pdev, 0),
+	ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
 			    I40E_MAX_CSR_SPACE);
 
 	hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);