drm/xe: Restore GT freq on GSC load error

As part of a Wa_22019338487, ensure that GT freq is restored
even when GSC reload is not successful.

Fixes: 3b1592fb ("drm/xe/lnl: Apply Wa_22019338487")

Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240925204918.1989574-1-vinay.belgaumkar@intel.com


Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>