OMAP2/3 powerdomain: return errors rather than returning the output of IS_ERR()

IS_ERR returns only 1 or 0, and the functions return a negative error
in other cases anyways.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/powerdomain.c

@@ -478,7 +478,7 @@ int pwrdm_add_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
 	if (IS_ERR(p)) {
 		pr_debug("powerdomain: hardware cannot set/clear wake up of "
 			 "%s when %s wakes up\n", pwrdm1->name, pwrdm2->name);
-		return IS_ERR(p);
+		return PTR_ERR(p);
 	}
 
 	pr_debug("powerdomain: hardware will wake up %s when %s wakes up\n",
@@ -511,7 +511,7 @@ int pwrdm_del_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
 	if (IS_ERR(p)) {
 		pr_debug("powerdomain: hardware cannot set/clear wake up of "
 			 "%s when %s wakes up\n", pwrdm1->name, pwrdm2->name);
-		return IS_ERR(p);
+		return PTR_ERR(p);
 	}
 
 	pr_debug("powerdomain: hardware will no longer wake up %s after %s "
@@ -548,7 +548,7 @@ int pwrdm_read_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
 	if (IS_ERR(p)) {
 		pr_debug("powerdomain: hardware cannot set/clear wake up of "
 			 "%s when %s wakes up\n", pwrdm1->name, pwrdm2->name);
-		return IS_ERR(p);
+		return PTR_ERR(p);
 	}
 
 	return prm_read_mod_bits_shift(pwrdm1->prcm_offs, PM_WKDEP,
@@ -582,7 +582,7 @@ int pwrdm_add_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
 		pr_debug("powerdomain: hardware cannot set/clear sleep "
 			 "dependency affecting %s from %s\n", pwrdm1->name,
 			 pwrdm2->name);
-		return IS_ERR(p);
+		return PTR_ERR(p);
 	}
 
 	pr_debug("powerdomain: will prevent %s from sleeping if %s is active\n",
@@ -621,7 +621,7 @@ int pwrdm_del_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
 		pr_debug("powerdomain: hardware cannot set/clear sleep "
 			 "dependency affecting %s from %s\n", pwrdm1->name,
 			 pwrdm2->name);
-		return IS_ERR(p);
+		return PTR_ERR(p);
 	}
 
 	pr_debug("powerdomain: will no longer prevent %s from sleeping if "
@@ -664,7 +664,7 @@ int pwrdm_read_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
 		pr_debug("powerdomain: hardware cannot set/clear sleep "
 			 "dependency affecting %s from %s\n", pwrdm1->name,
 			 pwrdm2->name);
-		return IS_ERR(p);
+		return PTR_ERR(p);
 	}
 
 	return prm_read_mod_bits_shift(pwrdm1->prcm_offs, OMAP3430_CM_SLEEPDEP,