arm64/ptrace: Clean up error handling path in sve_set_common()

mainline inclusion
from mainline-v6.6-rc1
commit 5f69ca42
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8E73O
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5f69ca4229c7d8e23f238174827ee7aa49b0bcb2



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All error handling paths go to 'out', except this one. Be consistent and
also branch to 'out' here.

Fixes: e12310a0 ("arm64/sme: Implement ptrace support for streaming mode SVE registers")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/aa61301ed2dfd079b74b37f7fede5f179ac3087a.1689616473.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>