qcacmn: Fix decrement flush in progress

When rx buffer queue list is empty flush in progress
atomic variable is not decremented before return. Fix
this by removing the code to check list empty as the
qdf function to remove the node from front will also
do the same check for empty list, so the code fall
through and return at the end of the function.

Change-Id: I29b87eb7f9e5d35918aba6ad1d0ccbbdbf6eee3b
CRs-Fixed: 2444437
1 file changed