video: driver: fix error handling sequence in msm_vidc_open

Currently msm_vidc_close is called directly for any failure
in msm_vidc_open(at any level). So i.e leading to free without
alloc & deinit without init problems.

Example:
if msm_vdec_inst_init is failed, msm_vidc_event_queue_deinit
will be called as part of msm_vidc_close and leading to crash
at v4l2_fh_del.

v4l2_fh_del should be called only if v4l2_fh_add is successful.

Change-Id: I5dd063c19327b881f533aa141f77b23ee7fad125
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>

driver/vidc/inc/msm_vidc_inst.h

@@ -138,6 +138,7 @@ struct msm_vidc_inst {
 	struct completion                  completions[MAX_SIGNAL];
 	bool                               active;
 	u64                                last_qbuf_time_ns;
+	bool                               vb2q_init;
 };
 
 #endif // _MSM_VIDC_INST_H_