i2c: qcom-geni: fix error return code in geni_i2c_gpi_xfer
[ Upstream commit 7d8ccf4f ] Fix to return a negative error code from the gi2c->err instead of 0. Fixes: d8703554 ("i2c: qcom-geni: Add support for GPI DMA") Signed-off-by: Wang Yufen <wangyufen@huawei.com> Reviewed-by: Tommaso Merciai <tommaso.merciai@amarulasoluitons.com> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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