apps/grgsm_trx: move init code from run() to __init__()

Change-Id: I1bcc9c8a2d37d156bbec93be3838200f6c4a80c2
diff --git a/apps/grgsm_trx b/apps/grgsm_trx
index 23268b8..7eeea50 100755
--- a/apps/grgsm_trx
+++ b/apps/grgsm_trx
@@ -3,7 +3,7 @@
 
 # GR-GSM based transceiver
 #
-# (C) 2016-2018 by Vadim Yanitskiy <axilirator@gmail.com>
+# (C) 2016-2019 by Vadim Yanitskiy <axilirator@gmail.com>
 # (C) 2017-2018 by Piotr Krysik <ptrkrysik@gmail.com>
 #
 # All Rights Reserved
@@ -58,7 +58,6 @@
 		# Set up signal handlers
 		signal.signal(signal.SIGINT, self.sig_handler)
 
-	def run(self):
 		# Init Radio interface
 		self.radio = RadioInterface(self.phy_args, self.phy_sample_rate,
 			self.phy_rx_gain, self.phy_tx_gain, self.phy_ppm,
@@ -79,6 +78,7 @@
 
 		print("[i] Init complete")
 
+	def run(self):
 		# Enter main loop
 		while True:
 			self.server.loop()