iwlwifi: mvm: Fix VIF specific debugfs directory creation
iwlwifi: mvm: Fix VIF specific debugfs directory creation

Avoid creating VIF specific debugfs directory if already exist.
This may happen when, for example, resetting hw, suspend-resume.

Signed-off-by: Alexander Bondar <344470f2ae3d43c115823f3f9ccfaeed124712ee@intel.com>
Reviewed-by: Emmanuel Grumbach <643a80aaf16a8332d6a70921c14d4bb265446494@intel.com>
Signed-off-by: Johannes Berg <8398eb9892c5ab2ff439ca0b5e4b0706dd9ebef9@sipsolutions.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs