usb: typec: tcpm: Do not finish VDM AMS for retrying Responses

If the VDM responses couldn't be sent successfully, it doesn't need to
finish the AMS until the retry count reaches the limit.

Fixes: 0908c5a ("usb: typec: tcpm: AMS and Collision Avoidance")
Reviewed-by: Guenter Roeck <[email protected]>
Cc: stable <[email protected]>
Acked-by: Heikki Krogerus <[email protected]>
Signed-off-by: Kyle Tso <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: kyletsoadl

drivers/usb/typec/tcpm/tcpm.c

@@ -1942,6 +1942,9 @@ static void vdm_run_state_machine(struct tcpm_port *port)
 			tcpm_log(port, "VDM Tx error, retry");
 			port->vdm_retries++;
 			port->vdm_state = VDM_STATE_READY;
+			if (PD_VDO_SVDM(vdo_hdr) && PD_VDO_CMDT(vdo_hdr) == CMDT_INIT)
+				tcpm_ams_finish(port);
+		} else {
 			tcpm_ams_finish(port);
 		}
 		break;