i40e: Fix inconsistent indenting

Fixed new static analysis findings:
"warn: inconsistent indenting" - introduced lately,
reported with lkp and smatch build.

Fixes: 4b208eaa

 ("i40e: Add init and default config of software based DCB")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>