drm/msm/dpu: Fix error recovery after failing to enable clocks

If enabling clocks fails in msm_dss_enable_clk() the code to unwind the
settings starts at 'i' which is the clock that just failed. While this
isn't harmful it does result in a number of warnings from the clock
subsystem while trying to unpreare/disable the very clock that had
just failed to prepare/enable. Skip the current failed clock during
the unwind to to avoid the extra log spew.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_io_util.c

@@ -114,9 +114,9 @@ int msm_dss_enable_clk(struct dss_clk *clk_arry, int num_clk, int enable)
 				rc = -EPERM;
 			}
 
-			if (rc) {
-				msm_dss_enable_clk(&clk_arry[i],
-					i, false);
+			if (rc && i) {
+				msm_dss_enable_clk(&clk_arry[i - 1],
+					i - 1, false);
 				break;
 			}
 		}