drm: Fix compiler warning in drm_atomic_helper.c

Kbuild was complaining about:
>> drivers/gpu/drm/drm_atomic_helper.c:3169:27: warning: 'state' may be used uninitialized in this function [-Wmaybe-uninitialized]

Now state can't actually be used uninitialized, but we'll assign a value
anyways so it stops bellyaching.

Kbuild config:
	link:	https://lists.01.org/pipermail/kbuild-all/2018-November/055374.html
	tree:   git://anongit.freedesktop.org/drm/drm-misc for-linux-next
	head:   b7ea04d299c78b6cf96ab281a1683ff62a74f969
	commit: b7ea04d299c78b6cf96ab281a1683ff62a74f969 [4/4] drm: Add
	DRM_MODESET_LOCK_BEGIN/END helpers
	config: x86_64-randconfig-x017-201847 (attached as .config)
	compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
	reproduce:
		git checkout b7ea04d299c78b6cf96ab281a1683ff62a74f969
		# save the attached .config to linux build tree
		make ARCH=x86_64

Fixes: b7ea04d299c7 ("drm: Add DRM_MODESET_LOCK_BEGIN/END helpers")
Cc: Daniel Vetter <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: David Airlie <[email protected]>
Cc: [email protected]
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Sean Paul <[email protected]>
[seanpaul added extra details on airlied's suggestion]
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

0 files changed, 0 insertions, 0 deletions