target/hppa: Fix BE,L set of sr0

The return address comes from IA*Q_Next, and IASQ_Next
is always equal to IASQ_Back, not IASQ_Front.

Tested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
1 file changed