drm/msm: Add error handling for krealloc in metadata setup

Function msm_ioctl_gem_info_set_metadata() now checks for krealloc
failure and returns -ENOMEM, avoiding potential NULL pointer dereference.
Explicitly avoids __GFP_NOFAIL due to deadlock risks and allocation constraints.

Signed-off-by: Yuan Chen <chenyuan@kylinos.cn>
Patchwork: https://patchwork.freedesktop.org/patch/661235/


Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>