misc: tegra-profiler: fix return value check

misc: tegra-profiler: fix return value check

Tegra System Profiler: device is frozen when using clk events.
Fix return value check.

Bug 1611412

Change-Id: Ic9da6f02b222aaf0b3e5e84156103be39a28168b
Signed-off-by: Igor Nabirushkin <inabirushkin@nvidia.com>
Reviewed-on: http://git-master/r/708066
(cherry picked from commit d7f72918dd2c210fd991e61414da3b5f95916f25)
Reviewed-on: http://git-master/r/747748
GVS: Gerrit_Virtual_Submit
Reviewed-by: Andrey Trachenko <atrachenko@nvidia.com>
Reviewed-by: Winnie Hsu <whsu@nvidia.com>