UPSTREAM: dma-buf: Remove the signaled bit status check

Remove the signaled bit status check because it is returning
early when the fence is already signaled and
__dma_fence_enable_signaling is checking the status of signaled
bit again.

Change-Id: I20fa15bb5f44d1f4af206f520911696930556d64
Signed-off-by: Arvind Yadav <Arvind.Yadav@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220914164321.2156-2-Arvind.Yadav@amd.com


Signed-off-by: Christian König <christian.koenig@amd.com>
(cherry picked from commit 6ad9aa47)
Bug: 394776841
Signed-off-by: T.J. Mercier <tjmercier@google.com>