msm: ipa: fix double free in ipa3_send()

Fix a double free introduced by merge conflict.

Change-Id: Idcfd33fcfcea8a63da0291aab226d96b0acd042c
CRs-Fixed: 2022853
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>