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>

Author: ColinIanKing

sound/soc/sof/ipc4-topology.c

@@ -755,7 +755,6 @@ static int sof_ipc4_widget_setup_comp_dai(struct snd_sof_widget *swidget)
 			 * It is fine to call kfree(ipc4_copier->copier_config) since
 			 * ipc4_copier->copier_config is null.
 			 */
-			ret = 0;
 			break;
 		}