i40e: fix error handling when alloc of vsi array fails

Swap a couple lines around in the error handling if the kzalloc() for
the pf->vsi array fails.  This was causing a kernel BUG because the
call to i40e_clear_interrupt_scheme() was assuming the pf->vsi[] array
existed.  In this fix it is possible that i40e_reset_interrupt_capability()
will get called twice, but this is a safe action.

Change-Id: I939163ccaa89baac7511556d36bc873864c35ae1
Signed-off-by: NShannon Nelson <shannon.nelson@intel.com>
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: NKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

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

@@ -7775,9 +7775,10 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	/* Unwind what we've done if something failed in the setup */
 err_vsis:
 	set_bit(__I40E_DOWN, &pf->state);
-err_switch_setup:
 	i40e_clear_interrupt_scheme(pf);
 	kfree(pf->vsi);
+err_switch_setup:
+	i40e_reset_interrupt_capability(pf);
 	del_timer_sync(&pf->service_timer);
 err_mac_addr:
 err_configure_lan_hmc: