drm/amdkfd: Do not fail process debugfs setup on debugfs errors

drm/amdkfd: Do not fail process debugfs setup on debugfs errors

debugfs is intended for debugging only, and failures to create debugfs
entries should not affect normal operation.

Remove the check for debugfs_create_dir() in kfd_debugfs_add_process().
If debugfs entries cannot be created, continue without them instead of
reporting an unnecessary error.

Fixes: 325de6bf3328 ("drm/amdkfd: expose pasid of secondary contexts by debugfs")
Reported-by: Dan Carpenter <error27@gmail.com>
Cc: Zhu Lingshan <lingshan.zhu@amd.com>
Cc: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>