msm: ipa: Add additional cleanup in finish rt rule addition

In case of rt rules overflow, clean up the rt entry in rt tables
list and free the rt entry memory.

Change-Id: I3e532d310acc5115e5c31c911544ac5db46106ed
Signed-off-by: Avinash Kumar <quic_avku@quicinc.com>
(cherry picked from commit 197d8139)