drm/i915: fix small leak on overlay error path
drm/i915: fix small leak on overlay error path

We should free "params" before returning.

Signed-off-by: Dan Carpenter <72501f147b2753e6660fdce744d9ac3084854f5e@gmail.com>
Reviewed-by: Daniel Vetter <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@ffwll.ch>
Cc: 4fbacc2fa0ffdbb11bf1ad6925b886ebd08dd15f@kernel.org (for .33)
Signed-off-by: Eric Anholt <96f164ad4d9b2b0dacf8ebee2bb1eeb3aa69adf1@anholt.net>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas