msm: ipa4: Set return value if coalescing frame open

Because of not setting return value in case of coalescing frame
open IPA clock was disabled. Add changes to set retun value
if coalescing frame open.

Change-Id: Id029153d0526fc37fd7b8cf82212b2dc4639f424
Signed-off-by: Ashok Vuyyuru <avuyyuru@codeaurora.org>