msm: msm_bus: add checks for memory allocation

Fix up any potential malloc failure checks and could
be later deferenced as NULL pointers.

Change-Id: Id628e80f3292a5e669f8a13c3c3c8b1b9f2c4ecb
Signed-off-by: David Dai <daidavid1@codeaurora.org>
2 files changed