i40iw: Add missing check for interface already open
commit
faa739fb5df56aadab96bcd2f6eb3486cc3a3aec upstream.
In i40iw_open(), check if interface is already open
and return success if it is.
Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>