typo in last commit

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4072 818b1a75-f10b-46b9-bf7c-635c3b92a50f

targets/RTAI/USER/init_exmimo2.sh

@@ -3,7 +3,7 @@
 PCI=`lspci -m | grep Xilinx`
 if [ -z "$PCI" ]; then
  echo "No card found. Stopping!"
- retur
+ return
 fi
 
 sudo rmmod openair_rf