The check should be performed by the caller. This fixes a compile
error with W=1.

../arch/powerpc/lib/sstep.c: In function ‘mlsd_8lsd_ea’:
../arch/powerpc/lib/sstep.c:225:3: error: suggest braces around empty body in 
an ‘if’ statement [-Werror=empty-body]
   ; /* Invalid form. Should already be checked for by caller! */
   ^

Cc: Jordan Niethe <jniet...@gmail.com>
Signed-off-by: Cédric Le Goater <c...@kaod.org>
---
 arch/powerpc/lib/sstep.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index caee8cc77e19..e9dcaba9a4f8 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -219,10 +219,13 @@ static nokprobe_inline unsigned long 
mlsd_8lsd_ea(unsigned int instr,
                ea += regs->gpr[ra];
        else if (!prefix_r && !ra)
                ; /* Leave ea as is */
-       else if (prefix_r && !ra)
+       else if (prefix_r)
                ea += regs->nip;
-       else if (prefix_r && ra)
-               ; /* Invalid form. Should already be checked for by caller! */
+
+       /*
+        * (prefix_r && ra) is an invalid form. Should already be
+        * checked for by caller!
+        */
 
        return ea;
 }
-- 
2.25.4

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