fix: Defer file close instead of waiting after write.

internal/clis/hmpki/generate_key.go

@@ -44,12 +44,10 @@ var generateKeyCmd = &cobra.Command{
 		if err != nil {
 			return err
 		}
+		defer kf.Close()
 		if _, err = kf.Write(pemBytes); err != nil {
 			return err
 		}
-		if err = kf.Close(); err != nil {
-			return err
-		}
 
 		return nil
 	},