Validate 5 GHz channel in P2P commands

This commit fixes static analysis taint issues.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

p2p.c

@@ -816,8 +816,13 @@ static int cmd_sta_start_autonomous_go(struct sigma_dut *dut,
 		freq = 2407 + chan * 5;
 	else if (chan == 14)
 		freq = 2484;
-	else
+	else if (chan >= 36 && chan <= 165)
 		freq = 5000 + chan * 5;
+	else {
+		sigma_dut_print(dut, DUT_MSG_ERROR,
+				"Invalid channel: %d", chan);
+		return -1;
+	}
 
 	if (ssid_param)
 		snprintf(buf, sizeof(buf), "P2P_SET ssid_postfix %s",
@@ -1077,8 +1082,13 @@ static int cmd_sta_p2p_start_group_formation(struct sigma_dut *dut,
 			freq = 2407 + chan * 5;
 		else if (chan == 14)
 			freq = 2484;
-		else
+		else if (chan >= 36 && chan <= 165)
 			freq = 5000 + chan * 5;
+		else {
+			sigma_dut_print(dut, DUT_MSG_ERROR,
+					"Invalid channel: %d", chan);
+			return -1;
+		}
 	}
 
 	if (dut->wps_method == WFA_CS_WPS_NOT_READY) {