CVE-2022-49510: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: drm/omap: fix NULL but dereferenced coccicheck error Fix the following coccicheck warning: ./drivers/gpu/drm/omapdrm/omapoverlay.c:89:22-25: ERROR: rovl is NULL but dereferenced. Here should be ovl-idx rather than rovl-idx...