drm/msm/gem: Fix error code msm_parse_deps()

[ Upstream commit 0b305b7 ]

The SUBMIT_ERROR() macro turns the error code negative.  This extra '-'
operation turns it back to positive EINVAL again.  The error code is
passed to ERR_PTR() and since positive values are not an IS_ERR() it
eventually will lead to an oops.  Delete the '-'.

Fixes: 866e43b ("drm/msm: UAPI error reporting")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/637625/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Dan Carpenter

drivers/gpu/drm/msm/msm_gem_submit.c

@@ -509,7 +509,7 @@ static struct drm_syncobj **msm_parse_deps(struct msm_gem_submit *submit,
 		}
 
 		if (syncobj_desc.flags & ~MSM_SUBMIT_SYNCOBJ_FLAGS) {
-			ret = -SUBMIT_ERROR(EINVAL, submit, "invalid syncobj flags: %x", syncobj_desc.flags);
+			ret = SUBMIT_ERROR(EINVAL, submit, "invalid syncobj flags: %x", syncobj_desc.flags);
 			break;
 		}