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Latchesar Ionkov
e46662be7fd
Latchesar Ionkov committed 1d6b5602381
net/9p: set error to EREMOTEIO if trans->write returns zero

If trans->write returns 0, p9_write_work goes through the error path, but
sets the error code to zero.

This patch sets the error code to EREMOTEIO if trans->write returns zero
value.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>