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i2c: amd_mp2: handle num is 0 input for i2c_amd_xfer
clang static analyzer reports this problem i2c-amd-mp2-plat.c:174:9: warning: Branch condition evaluates to a garbage value return err ? err : num; ^~~ err is not initialized, it depends on the being set in the transfer loop which will not happen if num is 0. Surveying other master_xfer() implementations show all handle a 0 num. Because returning 0 is expected, initialize err to 0. Signed-off-by: Tom Rix <trix@redhat.com> Acked-by: Elie Morisse <syniurge@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
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@ -155,7 +155,7 @@ static int i2c_amd_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
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struct amd_i2c_dev *i2c_dev = i2c_get_adapdata(adap);
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int i;
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struct i2c_msg *pmsg;
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int err;
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int err = 0;
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/* the adapter might have been deleted while waiting for the bus lock */
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if (unlikely(!i2c_dev->common.mp2_dev))
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