drm/amd/powerplay: fix amd_powerplay_reset()

We accidentally inverted an if statement and turned amd_powerplay_reset()
into a no-op.

Fixes: ae97988f ("drm/amd/powerplay: tidy up ret checks in amd_powerplay.c (v3)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/amd_powerplay.c

@@ -1184,7 +1184,7 @@ int amd_powerplay_reset(void *handle)
 	int ret;
 
 	ret = pp_check(instance);
-	if (!ret)
+	if (ret)
 		return ret;
 
 	ret = pp_hw_fini(instance);