The msix_entries memory can be freed by a previous suspend or
remove, so don't crash on close when it isn't there.
Signed-off-by: NMark Rustad <mark.d.rustad@intel.com>
Tested-by: NKrishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>