net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()

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CVE-2025-39857 · Microsoft / collected KEV context

cve-program · CVE-2025-39857

• https://git.kernel.org/stable/c/0cdf1fd8fc59d44a48c694324611136910301ef9
• https://git.kernel.org/stable/c/f18d9b3abf9c6587372cc702f963a7592277ed56
• https://git.kernel.org/stable/c/eb929910bd4b4165920fa06a87b22cc6cae92e0e
• https://git.kernel.org/stable/c/34f17cbe027050b8d5316ea1b6f9bd7c378e92de
• https://git.kernel.org/stable/c/ba1e9421cf1a8369d25c3832439702a015d6b5f9

No related operational record is retained in the current change model.