[PATCH] drm/amdgpu: fix retry loop test

[Dan Carpenter]

This loop will exit with "retry" set to -1 if it fails but the code
checks for if "retry" is zero.  Fix this by changing post-op to a
pre-op.  --retry vs retry--.

Fixes: e01eeffc3f86 ("drm/amd/pm: avoid driver getting empty metrics table for the first time")
Signed-off-by: Dan Carpenter <dan.carpenter at linaro.org>
---
Obviously this only loop 99 times now instead of a hundred but that's
fine, this is an approximation.

 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
index ff58ee14a68f..20163a9b2a66 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
@@ -336,7 +336,7 @@ static int smu_v13_0_6_setup_driver_pptable(struct smu_context *smu)
 
 	/* Store one-time values in driver PPTable */
 	if (!pptable->Init) {
-		while (retry--) {
+		while (--retry) {
 			ret = smu_v13_0_6_get_metrics_table(smu, NULL, true);
 			if (ret)
 				return ret;
-- 
2.39.2