drm/i915/psr: Init variable to avoid early exit from et alignment loop

drm/i915/psr: Init variable to avoid early exit from et alignment loop

Uninitialized boolean variable may cause unwanted exit from et alignment
loop. Fix this by initializing it as false.

Fixes: 1be2fca84f52 ("drm/i915/psr: Repeat Selective Update area alignment")
Cc: <stable@vger.kernel.org> # v6.9+
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Nemesa Garg <nemesa.garg@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patch.msgid.link/20260413112345.88853-1-jouni.hogander@intel.com
(cherry picked from commit 289678a90b8cf81e3514c9d6c667235cd39c7acf)
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>