ASoC: SOF: validate topology volume range before allocation

ASoC: SOF: validate topology volume range before allocation

SOF treats the topology mixer min and max values as non-negative indices
into its volume table. It stores them in signed fields, allocates max + 1
entries through an int argument, and later indexes the table with the
stored range.

An inverted range is invalid, while a maximum at or above INT_MAX cannot
be represented safely after the increment or in the signed fields.
Validate the complete range before storing it or allocating the table.

Fixes: 311ce4fe7637 ("ASoC: SOF: Add support for loading topologies")
Assisted-by: Codex:gpt-5
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Acked-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://patch.msgid.link/20260814081238.25434-1-pengpeng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>