msm: ipa: rm: change memory allocation from atomic to non-atomic

Change memory allocation to non-atomic before calling user callback.
Atomic memory allocation can fail with larger probability than
non-atomic one. Non-atomic allocation can be used here because this
function is used in a non-atomic context.

Change-Id: I7ef822d9dcad2b317ce9317d9cc2ac0cf91b7ecb
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>