disp: msm: sde: handle all error cases during sui transitions

During secure-ui, the SMMU, MISR and VBIF states
are altered based on the enable/disable of secure-ui
which is followed by the scm_call. Failure in any of
the steps would lead the system to an unstable state.
Address all the failures and revert back all steps
to get the system back in original state to avoid
any issues.

Change-Id: I736c6cf018c5992ec33806c00e58bf56b818b8a7
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
Signed-off-by: Samantha Tran <samtran@codeaurora.org>

msm/sde/sde_crtc.c

@@ -1783,6 +1783,7 @@ int sde_crtc_get_secure_transition_ops(struct drm_crtc *crtc,
 
 	smmu_state = &sde_kms->smmu_state;
 	smmu_state->prev_state = smmu_state->state;
+	smmu_state->prev_secure_level = smmu_state->secure_level;
 
 	sde_crtc = to_sde_crtc(crtc);
 	secure_level = sde_crtc_get_secure_level(crtc, crtc->state);