msm: ipa4: Don't decrease the client count if suspend fail

Because of decreasing the client count not able undo the
last client suspend operation. Add changes to avoid decrementing
the client count, it will allow undo last client suspend operation.

Change-Id: I486550734a1e8181aa4be19972b54c818ad75eeb
Signed-off-by: Ashok Vuyyuru <avuyyuru@codeaurora.org>