[SX126x] Fixed data rate checking (#948)

src/modules/SX126x/SX126x.cpp

@@ -988,11 +988,13 @@ int16_t SX126x::checkDataRate(DataRate_t dr) {
   if(modem == RADIOLIB_SX126X_PACKET_TYPE_GFSK) {
     RADIOLIB_CHECK_RANGE(dr.fsk.bitRate, 0.6, 300.0, RADIOLIB_ERR_INVALID_BIT_RATE);
     RADIOLIB_CHECK_RANGE(dr.fsk.freqDev, 0.6, 200.0, RADIOLIB_ERR_INVALID_FREQUENCY_DEVIATION);
+    return(RADIOLIB_ERR_NONE);
 
   } else if(modem == RADIOLIB_SX126X_PACKET_TYPE_LORA) {
     RADIOLIB_CHECK_RANGE(dr.lora.spreadingFactor, 5, 12, RADIOLIB_ERR_INVALID_SPREADING_FACTOR);
     RADIOLIB_CHECK_RANGE(dr.lora.bandwidth, 0.0, 510.0, RADIOLIB_ERR_INVALID_BANDWIDTH);
     RADIOLIB_CHECK_RANGE(dr.lora.codingRate, 5, 8, RADIOLIB_ERR_INVALID_CODING_RATE);
+    return(RADIOLIB_ERR_NONE);
   
   }