msm: ipa: Compilation errors fix when IPA config flags not enabled

This change fixes a compilation error with missing semicolon
and having an used function when the config flag CONFIG_IPA3
is not enabled for SDM855.

Change-Id: Ic5a51c548c55ce8fb2a83cf22944484e445e31f2
Acked-by: Jyothi Jayanthi <jyothij@qti.qualcomm.com>
Signed-off-by: Michael Adisumarta <madisuma@codeaurora.org>