ASoC: SOF: ipc4-topology: remove redundant assignment to variable ret

The variable ret is being assigned a zero value however the value is
never read because ret is being re-assigned later after the end of
the switch statement. The assignment is redundant and can be removed.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20241113130807.1386754-1-colin.i.king@gmail.com


Signed-off-by: Mark Brown <broonie@kernel.org>