UPSTREAM: coresight: tmc-etr: Handle errors enabling CATU

Make sure we honor the errors in CATU device and abort the operation.
While at it, delay setting the etr_buf for the session until we are
sure that we are indeed enabling the ETR.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

(Upstream commit 1c7995e11cd3252d0db63dad948fc96f05d75b77).

Bug: 140266694
Change-Id: I3773cbee72fa8960b473f5770674f2168563586a
Signed-off-by: Yabin Cui <yabinc@google.com>