xen/grant: Fix compile warning.
drivers/xen/grant-table.c:85: warning: ‘rc’ may be used uninitialized in this function
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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drivers/xen/grant-table.c:85: warning: ‘rc’ may be used uninitialized in this function
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>