If you ever have to remove your door bar, some holes will be left behind in the wood. These are caused by the screws that hold the brackets, and they can be repaired using wood filler or paintable caulk.
The materials you'll need for this repair are:
Putty knife or scraper
Sandpaper (medium grit)
Paint or stain to match your door frame
To begin, remove any loose wood chips or debris from the screw holes with a putty knife.
Fill the screw holes with wood filler using the putty knife.
Make sure the wood filler is slightly overfilled to allow for shrinkage when it dries.
Allow the wood filler to dry completely according to the manufacturer's instructions.
Once it's dry, sand down any rough edges and apply a second coat of primer if you want to ensure that the patch will be smooth and even when it's painted over.
Sand the wood filler smooth with medium grit sandpaper until it is flush with the surrounding wood.
Wipe away any dust or debris with a clean cloth.
The final step is to apply a coat of paint or stain to match the surrounding wood. The best way to do this is with a brush, but if you don't have one, you can use an old sock instead. Allow the paint or stain to dry completely according to the manufacturer's instructions before replacing your door frame back in its original position and securing it with screws (or nails).
If necessary, repeat steps 4-6 until the repaired area is completely smooth and matches the surrounding wood.
With these simple steps, you can easily repair a doorway frame from holes left by screws.