Pinky Rock lick

Ok I have been playing for a long time off and on 40 years..( basiclly I have been wondering in the desert) I want to finally master the rock lick you use with you pinky (if I can, It might be physicly impossible.) This is the lick I am talking about. It is used in 1000's of rock tunes.. Ok, say you are using a E bar chord on the 7th fret ( born to be wild lick)

|---------------------------------------|
|---------------------------------------|
|-9---x-x--9---x--9---x-9---------------|
|-9---x-x--9---x--9---x-9---11p9--12p9--|
|-7---x-x--7---x--7---x-7---7-----7-----|
|---------------------------------------|

My pinky doesn't like to go to the 12th fret ( it hurts). I think many people have problems with this, how have you get over this or if you keep practicing will yourfinger stretch. I guess I have never mastered it because it always felt uncomfortable...

I guess the first thing to be sure of is if that's actually how it's being played.
First thing I'd do if I couldn't reach it is see if there's a different way of fingering the chord. For instance, instead of barring the 2nd, 3rd and 4th strings with your 3rd finger, try using your second finger so your pinky can stretch further.
Alternatively, move the whole thing up and do a barred E on the 12th fret instead.
If you're determined to actually stretch your finger... try moving your thumb right to the back of the guitar neck to give yourself more support. and while you're pulling off from the 12th fret, don't feel it's mandatory to keep the 3rd string fingered. You can temporarily mute the string instead.

thanks, never thought of using my second finger, it makes the stretch alot easier. As far as the tab goes, i just grabbed that off the internet for an example, I don't know if it is right or not..