Commit
d14fb9987272926a70bc3d830525d10522b1cd05
by Neels Hofmeyrranap_cn_rx_co(): do not ranap_cn_rx_co_free() on error
When ranap_cn_rx_co_decode2() returns an error, we should not call
ranap_cn_rx_co_free(). It results in logging
DRANAP INFO Freeing RANAP Procedure unknown 0x0 (CO) from RNC not implemented
Change the function flow to early-exit pattern to skip
ranap_cn_rx_co_free() on error.
Change-Id: If7545f91c69f06bc32c55cab7dcfcad8350b0473