net: wwan: iosm: fix memory leak in ipc_pcie_read_bios_cfg

net: wwan: iosm: fix memory leak in ipc_pcie_read_bios_cfg

[ Upstream commit d38a648d2d6cc7bee11c6f533ff9426a00c2a74c ]

ipc_pcie_read_bios_cfg() is using the acpi_evaluate_dsm() to
obtain the wwan power state configuration from BIOS but is
not freeing the acpi_object. The acpi_evaluate_dsm() returned
acpi_object to be freed.

Free the acpi_object after use.

Fixes: 7e98d785ae61 ("net: iosm: entry point")
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 13b1ea861e8aeb701bcfbfe436b943efa2d44029)
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>