UPSTREAM: drm/nouveau/gsp: fix potential leak of memory used during acpi init

[ Upstream commit d133036a ]

If any of the ACPI calls fail, memory allocated for the input buffer
would be leaked.  Fix failure paths to free allocated memory.

Also add checks to ensure the allocations succeeded in the first place.

Reported-by: Danilo Krummrich <dakr@kernel.org>
Fixes: 176fdcbd ("drm/nouveau/gsp/r535: add support for booting GSP-RM")
Change-Id: I4e09c7560e05c1dd7da6e102b4ec914aac2f8ac5
Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20250617040036.2932-1-bskeggs@nvidia.com


Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit fa7e9a15)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>