msm: mdss: Return correct error value
msm: mdss: Return correct error value

Return a proper value rather than 0 everytime.

Change-Id: I0065a420c65e4800d114be4698618d66de89d105
Signed-off-by: Deva Ramasubramanian <8f8b6109cd5e7b75746932bf5dcf69e763e1f0b2@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas