xfs_admin: correctly parse IO_OPTS parameters

Change exec to eval so that the IO_OPTS parameters are parsed correctly
when the parameters contain quotations.

Fixes: e7cd89b2da72 ("xfs_admin: get UUID of mounted filesystem")
Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
diff --git a/db/xfs_admin.sh b/db/xfs_admin.sh
index b73fb3a..3a7f44e 100755
--- a/db/xfs_admin.sh
+++ b/db/xfs_admin.sh
@@ -69,7 +69,8 @@
 			if [ -n "$IO_OPTS" ]; then
-				exec xfs_io -p xfs_admin $IO_OPTS "$mntpt"
+				eval xfs_io -p xfs_admin $IO_OPTS "$mntpt"
+				exit $?