platform/x86: dell-smbios: Simplify error handling

platform/x86: dell-smbios: Simplify error handling

When the allocation of value_name fails, the error handling code
uses two gotos for error handling, which is not necessary.

Simplify the error handling in this case by only using a single goto.

Tested on a Dell Inspiron 3505.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240528204903.445546-2-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>