PM / devfreq: exynos-ppmu: Delete an error message for a failed memory allocation...

PM / devfreq: exynos-ppmu: Delete an error message for a failed memory allocation in exynos_ppmu_probe()

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Change-Id: I25ee724ab3da80f54f339c4ed54bb7bf3c30dbc8
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
[cw00.choi: Backported from mainline kernel]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>