igb: Cleanups to fix static initialization

This patch fixes ERROR:INITIALISED_STATIC from checkpatch file check.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/igb/igb_main.c

@@ -213,7 +213,7 @@ static struct notifier_block dca_notifier = {
 static void igb_netpoll(struct net_device *);
 #endif
 #ifdef CONFIG_PCI_IOV
-static unsigned int max_vfs = 0;
+static unsigned int max_vfs;
 module_param(max_vfs, uint, 0);
 MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate per physical function");
 #endif /* CONFIG_PCI_IOV */