i40evf: don't use RESETTING state during reinit

The RESETTING state means that a Catastrophic Hardware Bad Thing is
happening and the driver need to tiptoe around and not use the admin
queue or registers or anything like that.

On the other hand, a reinit is no big deal and we can use the admin
queue, and we should. So don't set the state to RESETTING here.

This fixes a Tx hang and FW crash that happens after setting the MTU on
a VF.

Change-ID: I3e6191edbd6a93958a1f1bd1d41a5c2d17474d41
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Tested-by: NSibai Li <sibai.li@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40evf/i40evf_main.c

@@ -1844,8 +1844,6 @@ void i40evf_reinit_locked(struct i40evf_adapter *adapter)
 
 	WARN_ON(in_interrupt());
 
-	adapter->state = __I40EVF_RESETTING;
-
 	i40evf_down(adapter);
 
 	/* allocate transmit descriptors */