msm: camera: tfe: Avoid unclocked access of registers during regdump

Un-clocked access of registers during dumping the registers while
handling the start failure.
Reason for the issue is that handle regdump trying to read the hw
registers when HW clocks are disabled.
This commits adds a check to validate if the hw is initialized before
accessing the registers.

CRs-Fixed: 3865839
Change-Id: I46878fe1b5442689f8fd909b6bfc9fda0686dac9
Signed-off-by: Pranav Sanwal <[email protected]>

drivers/cam_isp/isp_hw_mgr/cam_tfe_hw_mgr.c

@@ -158,6 +158,12 @@ static int cam_tfe_mgr_handle_reg_dump(struct cam_tfe_hw_mgr_ctx *ctx,
 		return rc;
 	}
 
+	if (!ctx->init_done) {
+		CAM_WARN(CAM_ISP, "regdump can't possible as HW not initialized, ctx_idx: %u",
+				ctx->ctx_index);
+		return 0;
+	}
+
 	if (!atomic_read(&ctx->cdm_done))
 		CAM_WARN_RATE_LIMIT(CAM_ISP,
 			"Reg dump values might be from more than one request");