MALI: Fix userpointer access

Some code in the mali driver was accessing user pointers
directly instead using the reference that has been copied
already.

This changes the access to use the already copied over
reference.

Change-Id: Ifc461964e8714c1f95af4c70e2dd45bbc7673482
Signed-off-by: John Stultz <john.stultz@linaro.org>
1 file changed