msm: ipa3: Fix if condition with the correct check

'Commit id Id489171a984 (msm: ipa3: Fix to reduce user
data size for WDI offloaded channels)' if condition check was wrong.
Add changes to fix the issue.

Change-Id: If3c4dac094440f813baf2a395d71031d2b51ba6c
Signed-off-by: Ashok Vuyyuru <avuyyuru@codeaurora.org>