Revert "drm/msm: Use labels for unwinding in the error path"

This reverts commit 77050c3f.

This reversion is happening as a result of disabling the
disp/dpu directory as it will not be used in 4.19 downstream
display driver and these changes are made in a common layer
which affects the downstream driver functionalities. Separate
patches are submitted to revert the upstream driver and
introduce the downstream version of the display driver.

Change-Id: Ic9b337f0f5fc18df68d469cdebe01ceae22cb268
Signed-off-by: Samantha Tran <samtran@codeaurora.org>