fix: check createDir return value

Added a check in the createDir function to verify if the file exists
(this is not an error)

Signed-off-by: Marcel Skierkowski <marcel.skierkowski@intel.com>

shared/offline_compiler/source/offline_compiler.cpp

@@ -1655,7 +1655,12 @@ void OfflineCompiler::writeOutAllFiles() {
 int OfflineCompiler::createDir(const std::string &path) {
     auto result = IoFunctions::mkdirPtr(path.c_str());
     if (result != 0) {
-        return OCLOC_INVALID_FILE;
+        if (errno == EEXIST) {
+            // Directory already exists, not an error
+            return OCLOC_SUCCESS;
+        } else {
+            return OCLOC_INVALID_FILE;
+        }
     }
     return OCLOC_SUCCESS;
 }